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data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Terms" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Terms"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Terms</span> </div> </a> <button aria-controls="toc-Terms-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Terms subsection</span> </button> <ul id="toc-Terms-sublist" class="vector-toc-list"> <li id="toc-Previous_license" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Previous_license"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Previous license</span> </div> </a> <ul id="toc-Previous_license-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-4-clause_license_(original_"BSD_License")" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#4-clause_license_(original_"BSD_License")"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>4-clause license (original "BSD License")</span> </div> </a> <ul id="toc-4-clause_license_(original_"BSD_License")-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-3-clause_license_("BSD_License_2.0",_"Revised_BSD_License",_"New_BSD_License",_or_"Modified_BSD_License")" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#3-clause_license_("BSD_License_2.0",_"Revised_BSD_License",_"New_BSD_License",_or_"Modified_BSD_License")"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>3-clause license ("BSD License 2.0", "Revised BSD License", "New BSD License", or "Modified BSD License")</span> </div> </a> <ul id="toc-3-clause_license_("BSD_License_2.0",_"Revised_BSD_License",_"New_BSD_License",_or_"Modified_BSD_License")-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2-clause_license_("Simplified_BSD_License"_or_"FreeBSD_License")" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2-clause_license_("Simplified_BSD_License"_or_"FreeBSD_License")"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>2-clause license ("Simplified BSD License" or "FreeBSD License")</span> </div> </a> <ul id="toc-2-clause_license_("Simplified_BSD_License"_or_"FreeBSD_License")-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-0-clause_license_("BSD_Zero_Clause_License")" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#0-clause_license_("BSD_Zero_Clause_License")"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>0-clause license ("BSD Zero Clause License")</span> </div> </a> <ul id="toc-0-clause_license_("BSD_Zero_Clause_License")-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Other_variations" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Other_variations"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.6</span> <span>Other variations</span> </div> </a> <ul id="toc-Other_variations-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-License_compatibility" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#License_compatibility"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>License compatibility</span> </div> </a> <button aria-controls="toc-License_compatibility-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle License compatibility subsection</span> </button> <ul id="toc-License_compatibility-sublist" class="vector-toc-list"> <li id="toc-Commercial_license_compatibility" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Commercial_license_compatibility"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Commercial license compatibility</span> </div> </a> <ul id="toc-Commercial_license_compatibility-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-FOSS_compatibility" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#FOSS_compatibility"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>FOSS compatibility</span> </div> </a> <ul id="toc-FOSS_compatibility-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Reception_and_usage" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Reception_and_usage"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Reception and usage</span> </div> </a> <ul id="toc-Reception_and_usage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">BSD licenses</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" 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Available in 40 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-40" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">40 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D8%AE%D8%B5_%D8%A8%D9%8A_%D8%A5%D8%B3_%D8%AF%D9%8A" title="رخص بي إس دي – Arabic" lang="ar" hreflang="ar" data-title="رخص بي إس دي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Llic%C3%A8ncia_BSD" title="Llicència BSD – Catalan" lang="ca" hreflang="ca" data-title="Llicència BSD" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/BSD_licence" title="BSD licence – Czech" lang="cs" hreflang="cs" data-title="BSD licence" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/BSD-licenserne" title="BSD-licenserne – Danish" lang="da" hreflang="da" data-title="BSD-licenserne" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/BSD-Lizenz" title="BSD-Lizenz – German" lang="de" hreflang="de" data-title="BSD-Lizenz" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/BSD-litsents" title="BSD-litsents – Estonian" lang="et" hreflang="et" data-title="BSD-litsents" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Licencia_BSD" title="Licencia BSD – Spanish" lang="es" hreflang="es" data-title="Licencia BSD" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Permesiloj_de_BSD" title="Permesiloj de BSD – Esperanto" lang="eo" hreflang="eo" data-title="Permesiloj de BSD" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/BSD_lizentziak" title="BSD lizentziak – Basque" lang="eu" hreflang="eu" data-title="BSD lizentziak" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%A7%D9%86%D9%87%E2%80%8C%D9%87%D8%A7%DB%8C_%D8%A8%DB%8C%E2%80%8C%D8%A7%D8%B3%E2%80%8C%D8%AF%DB%8C" title="پروانه‌های بی‌اس‌دی – Persian" lang="fa" hreflang="fa" data-title="پروانه‌های بی‌اس‌دی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Licence_BSD" title="Licence BSD – French" lang="fr" hreflang="fr" data-title="Licence BSD" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Licenza_BSD" title="Licenza BSD – Galician" lang="gl" hreflang="gl" data-title="Licenza BSD" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/BSD_%ED%97%88%EA%B0%80%EC%84%9C" title="BSD 허가서 – Korean" lang="ko" hreflang="ko" data-title="BSD 허가서" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AC%E0%A5%80%E0%A4%8F%E0%A4%B8%E0%A4%A1%E0%A5%80_%E0%A4%B2%E0%A4%BE%E0%A4%87%E0%A4%B8%E0%A5%87%E0%A4%82%E0%A4%B8" title="बीएसडी लाइसेंस – Hindi" lang="hi" hreflang="hi" data-title="बीएसडी लाइसेंस" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Lisensi_BSD" title="Lisensi BSD – Indonesian" lang="id" hreflang="id" data-title="Lisensi BSD" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Licenze_BSD" title="Licenze BSD – Italian" lang="it" hreflang="it" data-title="Licenze BSD" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%99%D7%A9%D7%99%D7%95%D7%9F_BSD" title="רישיון BSD – Hebrew" lang="he" hreflang="he" data-title="רישיון BSD" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/BSD_licencija" title="BSD licencija – Lithuanian" lang="lt" hreflang="lt" data-title="BSD licencija" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/BSD_licenc" title="BSD licenc – Hungarian" lang="hu" hreflang="hu" data-title="BSD licenc" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AC%E0%B4%BF%E0%B4%8E%E0%B4%B8%E0%B5%8D%E0%B4%A1%E0%B4%BF_%E0%B4%85%E0%B4%A8%E0%B5%81%E0%B4%AE%E0%B4%A4%E0%B4%BF%E0%B4%AA%E0%B4%A4%E0%B5%8D%E0%B4%B0%E0%B4%82" title="ബിഎസ്ഡി അനുമതിപത്രം – Malayalam" lang="ml" hreflang="ml" data-title="ബിഎസ്ഡി അനുമതിപത്രം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Lesen_BSD" title="Lesen BSD – Malay" lang="ms" hreflang="ms" data-title="Lesen BSD" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/BSD-licentie" title="BSD-licentie – Dutch" lang="nl" hreflang="nl" data-title="BSD-licentie" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/BSD%E3%83%A9%E3%82%A4%E3%82%BB%E3%83%B3%E3%82%B9" title="BSDライセンス – Japanese" lang="ja" hreflang="ja" data-title="BSDライセンス" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/BSD-lisensen" title="BSD-lisensen – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="BSD-lisensen" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Licencje_BSD" title="Licencje BSD – Polish" lang="pl" hreflang="pl" data-title="Licencje BSD" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Licen%C3%A7a_BSD" title="Licença BSD – Portuguese" lang="pt" hreflang="pt" data-title="Licença BSD" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Licen%C8%9B%C4%83_BSD" title="Licență BSD – Romanian" lang="ro" hreflang="ro" data-title="Licență BSD" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9B%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D1%8F_BSD" title="Лицензия BSD – Russian" lang="ru" hreflang="ru" data-title="Лицензия BSD" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/BSD_licence" title="BSD licence – Simple English" lang="en-simple" hreflang="en-simple" data-title="BSD licence" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/BSD_licencia" title="BSD licencia – Slovak" lang="sk" hreflang="sk" data-title="BSD licencia" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Licenca_BSD" title="Licenca BSD – Slovenian" lang="sl" hreflang="sl" data-title="Licenca BSD" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/BSD_licence" title="BSD licence – Serbian" lang="sr" hreflang="sr" data-title="BSD licence" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/BSD_licenca" title="BSD licenca – Serbo-Croatian" lang="sh" hreflang="sh" data-title="BSD licenca" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/BSD-lisenssi" title="BSD-lisenssi – Finnish" lang="fi" hreflang="fi" data-title="BSD-lisenssi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/BSD-licens" title="BSD-licens – Swedish" lang="sv" hreflang="sv" data-title="BSD-licens" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/BSD_lisanslar%C4%B1" title="BSD lisansları – Turkish" lang="tr" hreflang="tr" data-title="BSD lisansları" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9B%D1%96%D1%86%D0%B5%D0%BD%D0%B7%D1%96%D1%8F_BSD" title="Ліцензія BSD – Ukrainian" lang="uk" hreflang="uk" data-title="Ліцензія BSD" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gi%E1%BA%A5y_ph%C3%A9p_BSD" title="Giấy phép BSD – Vietnamese" lang="vi" hreflang="vi" data-title="Giấy phép BSD" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/BSD%E8%A8%B1%E5%8F%AF%E8%AD%89" title="BSD許可證 – Cantonese" lang="yue" 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This is in contrast to <a href="/wiki/Copyleft" title="Copyleft">copyleft</a> licenses, which have <a href="/wiki/Share-alike" title="Share-alike">share-alike</a> requirements. The original BSD license was used for its namesake, the <a href="/wiki/Berkeley_Software_Distribution" title="Berkeley Software Distribution">Berkeley Software Distribution</a> (BSD), a <a href="/wiki/Unix-like" title="Unix-like">Unix-like</a> <a href="/wiki/Operating_system" title="Operating system">operating system</a>. The original version has since been revised, and its descendants are referred to as modified BSD licenses. </p><p>BSD is both a license and a class of license (generally referred to as BSD-like). The modified BSD license (in wide use today) is very similar to the license originally used for the BSD version of <a href="/wiki/Unix" title="Unix">Unix</a>. The BSD license is a simple license that merely requires that all code retain the BSD license notice if redistributed in source code format, or reproduce the notice if redistributed in binary format. The BSD license (unlike some other licenses e.g. <a href="/wiki/GPL" class="mw-redirect" title="GPL">GPL</a>) does not require that source code be distributed at all. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Terms">Terms</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=1" title="Edit section: Terms"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In addition to the original (4-clause) license used for BSD, several derivative licenses have emerged that are also commonly referred to as a "BSD license". Today, the typical BSD license is the 3-clause version, which is revised from the original 4-clause version. </p><p>In all BSD licenses as following, <code><year></code> is the year of the copyright. As published in BSD, <code><copyright holder></code> is "Regents of the University of California". </p> <div class="mw-heading mw-heading3"><h3 id="Previous_license">Previous license</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=2" title="Edit section: Previous license"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title">Prior BSD License</caption><tbody><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;"><a href="/wiki/Regents_of_the_University_of_California" title="Regents of the University of California">Regents of the University of California</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Publishing" title="Publishing">Publisher</a></th><td class="infobox-data" style="width:55%;"><a href="/wiki/Public_Domain" class="mw-redirect" title="Public Domain">Public Domain</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">1988</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;"><a href="/wiki/N/A" title="N/A">N/A</a> (see list<sup id="cite_ref-SPDX_License_List_1-0" class="reference"><a href="#cite_note-SPDX_License_List-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">No</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">No</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">No</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr></tbody></table> <p>Some releases of BSD prior to the adoption of the 4-clause BSD license used a license that is clearly ancestral to the 4-clause BSD license. These releases include some parts of 4.3BSD-Tahoe (1988), about 1000 files,<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and Net/1 (1989). Although largely replaced by the 4-clause license, this license can be found in 4.3BSD-Reno, Net/2, and 4.4BSD-Alpha. </p> <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote"> <p>Copyright (c) <year> <copyright holder>. All rights reserved. </p><p>Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that the software was developed by the <copyright holder>. The name of the <copyright holder> may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED `'AS IS″ AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. </p> </blockquote> <div class="mw-heading mw-heading3"><h3 id="4-clause_license_(original_"BSD_License")"><span id="4-clause_license_.28original_.22BSD_License.22.29"></span><span class="anchor" id="4-clause"></span> 4-clause license (original "BSD License")</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=3" title="Edit section: 4-clause license (original "BSD License")"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title">BSD License</caption><tbody><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;"><a href="/wiki/Regents_of_the_University_of_California" title="Regents of the University of California">Regents of the University of California</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Publishing" title="Publishing">Publisher</a></th><td class="infobox-data" style="width:55%;"><a href="/wiki/Public_Domain" class="mw-redirect" title="Public Domain">Public Domain</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">1990</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;">BSD-4-Clause<br />(see list for more<sup id="cite_ref-SPDX_License_List_1-1" class="reference"><a href="#cite_note-SPDX_License_List-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-DFSG-licences_3-0" class="reference"><a href="#cite_note-DFSG-licences-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">FSF</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-FSF-OriginalBSD_4-0" class="reference"><a href="#cite_note-FSF-OriginalBSD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">No<sup id="cite_ref-osi_5-0" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">No<sup id="cite_ref-FSF-OriginalBSD_4-1" class="reference"><a href="#cite_note-FSF-OriginalBSD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">No<sup id="cite_ref-FSF-OriginalBSD_4-2" class="reference"><a href="#cite_note-FSF-OriginalBSD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr></tbody></table><p> The original BSD license contained a clause not found in later licenses, known as the "advertising clause". This clause eventually became controversial, as it required authors of all works deriving from a BSD-licensed work to include an acknowledgment of the original source in all advertising material. This was clause number 3 in the original license text:<sup id="cite_ref-update_6-0" class="reference"><a href="#cite_note-update-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1244412712"></p><blockquote class="templatequote"> <p>Copyright (c) <year>, <copyright holder> All rights reserved. </p><p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: </p> <ol><li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li> <li>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</li> <li>All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by the <copyright holder>.</li> <li>Neither the name of the <copyright holder> nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.</li></ol> <p>THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> <i>AS IS</i> AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. </p> <p><sup id="cite_ref-update_6-1" class="reference"><a href="#cite_note-update-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></p></blockquote> <p>This clause was objected to on the grounds that as people changed the license to reflect their name or organization it led to escalating advertising requirements when programs were combined in a software distribution: every occurrence of the license with a different name required a separate acknowledgment. In arguing against it, <a href="/wiki/Richard_Stallman" title="Richard Stallman">Richard Stallman</a> has stated that he counted 75 such acknowledgments in a 1997 version of <a href="/wiki/NetBSD" title="NetBSD">NetBSD</a>.<sup id="cite_ref-GNU_7-0" class="reference"><a href="#cite_note-GNU-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> In addition, the clause presented a legal problem for those wishing to publish BSD-licensed software which relies upon separate programs using the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU GPL</a>: the advertising clause is <a href="/wiki/License_compatibility" title="License compatibility">incompatible</a> with the GPL, which does not allow the addition of restrictions beyond those it already imposes; because of this, the GPL's publisher, the <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a>, recommends developers not use the license, though it states there is no reason not to use software already using it.<sup id="cite_ref-FSF-OriginalBSD_4-3" class="reference"><a href="#cite_note-FSF-OriginalBSD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="3-clause_license_("BSD_License_2.0",_"Revised_BSD_License",_"New_BSD_License",_or_"Modified_BSD_License")"><span id="3-clause_license_.28.22BSD_License_2.0.22.2C_.22Revised_BSD_License.22.2C_.22New_BSD_License.22.2C_or_.22Modified_BSD_License.22.29"></span>3-clause license ("BSD License 2.0", "Revised BSD License", "New BSD License", or "Modified BSD License") <span class="anchor" id="3-clause"></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=4" title="Edit section: 3-clause license ("BSD License 2.0", "Revised BSD License", "New BSD License", or "Modified BSD License")"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/University_of_Illinois/NCSA_Open_Source_License" title="University of Illinois/NCSA Open Source License">University of Illinois/NCSA Open Source License</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title">New BSD License</caption><tbody><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;"><a href="/wiki/Regents_of_the_University_of_California" title="Regents of the University of California">Regents of the University of California</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Publishing" title="Publishing">Publisher</a></th><td class="infobox-data" style="width:55%;"><a href="/wiki/Public_Domain" class="mw-redirect" title="Public Domain">Public Domain</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;"><span data-sort-value="000000001999-07-22-0000" style="white-space:nowrap">22 July 1999</span><sup id="cite_ref-update_6-2" class="reference"><a href="#cite_note-update-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;">BSD-3-Clause<br />(see list for more<sup id="cite_ref-SPDX_License_List_1-2" class="reference"><a href="#cite_note-SPDX_License_List-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-DFSG-licences_3-1" class="reference"><a href="#cite_note-DFSG-licences-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">FSF</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-FSF-ModifiedBSD_8-0" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-osi_5-1" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-FSF-ModifiedBSD_8-1" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">No<sup id="cite_ref-FSF-ModifiedBSD_8-2" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr></tbody></table> <p>The advertising clause was removed from the license text in the official BSD license on July 22, 1999, by William Hoskins, Director of the Office of Technology Licensing for UC Berkeley.<sup id="cite_ref-update_6-3" class="reference"><a href="#cite_note-update-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> On January 31, 2012, UC Berkeley Executive Director of the Office of Intellectual Property and Industry Alliances established that licensees and distributors are no longer required to include the acknowledgement within advertising materials. Accordingly, the advertising clause 3 of the original 4-clause BSD license for any and all software officially licensed under a UC Berkeley version of the BSD license, was deleted in its entirety.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Other BSD distributions removed the clause, but many similar clauses remain in BSD-derived code from other sources, and unrelated code using a derived license. </p><p>While the original license is sometimes referred to as the "BSD-old", the resulting 3-clause version is sometimes referred to by "BSD-new." Other names include <b>new BSD</b>, "revised BSD", "BSD-3", or "3-clause BSD". This version has been <a href="/wiki/Vetting" title="Vetting">vetted</a> as an Open source license by the OSI as "The BSD License".<sup id="cite_ref-osi_5-2" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The Free Software Foundation, which refers to the license as the "Modified BSD License", states that it is compatible with the GNU GPL. The FSF encourages users to be specific when referring to the license by name (i.e. not simply referring to it as "a BSD license" or "BSD-style") to avoid confusion with the original BSD license.<sup id="cite_ref-FSF-ModifiedBSD_8-3" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>This version allows unlimited redistribution for any purpose as long as its copyright notices and the license's disclaimers of warranty are maintained. The license also contains a clause restricting use of the names of contributors for endorsement of a derived work without specific permission. </p> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1244412712"><blockquote class="templatequote"> <p>Copyright <year> <copyright holder> </p><p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: </p> <ol><li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li> <li>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</li> <li>Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.</li></ol><p> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<sup id="cite_ref-FSF-ModifiedBSD_8-4" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></p></blockquote> <div class="mw-heading mw-heading3"><h3 id="2-clause_license_("Simplified_BSD_License"_or_"FreeBSD_License")"><span id="2-clause_license_.28.22Simplified_BSD_License.22_or_.22FreeBSD_License.22.29"></span><span class="anchor" id="2-clause"></span> 2-clause license ("Simplified BSD License" or "FreeBSD License")</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=5" title="Edit section: 2-clause license ("Simplified BSD License" or "FreeBSD License")"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"FreeBSD License" redirects here. For documentation, see <a href="/wiki/FreeBSD_Documentation_License" title="FreeBSD Documentation License">FreeBSD Documentation License</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/ISC_license" title="ISC license">ISC license</a> and <a href="/wiki/MIT_License" title="MIT License">MIT License</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title">FreeBSD License</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:BSD_wordmark.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/BSD_wordmark.svg/220px-BSD_wordmark.svg.png" decoding="async" width="220" height="103" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/BSD_wordmark.svg/330px-BSD_wordmark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d5/BSD_wordmark.svg/440px-BSD_wordmark.svg.png 2x" data-file-width="150" data-file-height="70" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;">The <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a> Project</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Publishing" title="Publishing">Publisher</a></th><td class="infobox-data" style="width:55%;">The <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a> Project</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">April 1999 or earlier</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;">BSD-2-Clause<br />(see list for more<sup id="cite_ref-SPDX_License_List_1-3" class="reference"><a href="#cite_note-SPDX_License_List-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">FSF</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-FSF-FreeBSD_12-0" class="reference"><a href="#cite_note-FSF-FreeBSD-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-osi_5-3" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-FSF-FreeBSD_12-1" class="reference"><a href="#cite_note-FSF-FreeBSD-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">No<sup id="cite_ref-FSF-FreeBSD_12-2" class="reference"><a href="#cite_note-FSF-FreeBSD-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr></tbody></table> <p>An even more simplified version has come into use, primarily known for its usage in <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a>.<sup id="cite_ref-FreeBSD_13-0" class="reference"><a href="#cite_note-FreeBSD-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> It was in use there as early as 29 April 1999<sup id="cite_ref-FreeBSD2clause_14-0" class="reference"><a href="#cite_note-FreeBSD2clause-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> and likely well before. The primary difference between it and the New BSD (3-clause) License is that it omits the non-endorsement clause. The FreeBSD version of the license also adds a further disclaimer about views and opinions expressed in the software,<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> though this is not commonly included by other projects. </p><p>The Free Software Foundation, which refers to the license as the FreeBSD License, states that it is compatible with the GNU GPL. In addition, the FSF encourages users to be specific when referring to the license by name (i.e. not simply referring to it as "a BSD license" or "BSD-style"), as it does with the modified/new BSD license, to avoid confusion with the original BSD license.<sup id="cite_ref-FSF-FreeBSD_12-3" class="reference"><a href="#cite_note-FSF-FreeBSD-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1244412712"><blockquote class="templatequote"> <p>Copyright (c) <year>, <copyright holder> </p><p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: </p> <ol><li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li> <li>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</li></ol><p> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<sup id="cite_ref-FreeBSD_13-1" class="reference"><a href="#cite_note-FreeBSD-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p></blockquote> <p>Other projects, such as NetBSD, use a similar 2-clause license.<sup id="cite_ref-NetBSD_16-0" class="reference"><a href="#cite_note-NetBSD-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> This version has been vetted as an Open source license by the OSI as the "Simplified BSD License."<sup id="cite_ref-osi_5-4" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/ISC_license" title="ISC license">ISC license</a> without the 'and/or' wording is functionally equivalent, and endorsed by the <a href="/wiki/OpenBSD" title="OpenBSD">OpenBSD</a> project as a license template for new contributions.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="0-clause_license_("BSD_Zero_Clause_License")"><span id="0-clause_license_.28.22BSD_Zero_Clause_License.22.29"></span><span class="anchor" id="0-clause"></span> 0-clause license ("BSD Zero Clause License")</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=6" title="Edit section: 0-clause license ("BSD Zero Clause License")"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title">BSD Zero Clause License</caption><tbody><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;">Rob Landley</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">2013</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;">0BSD</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">FSF</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">?</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">No</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr></tbody></table> <p>The BSD 0-clause license goes further than the 2-clause license by dropping the requirements to include the copyright notice, license text, or disclaimer in either source or binary forms. Doing so forms a <a href="/wiki/Public-domain-equivalent_license" title="Public-domain-equivalent license">public-domain-equivalent license</a>,<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> the same way as <a href="/wiki/MIT_License#MIT_No_Attribution_License" title="MIT License">MIT No Attribution License</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (September 2021)">citation needed</span></a></i>]</sup> It is known as "0BSD", "Zero-Clause BSD", or "Free Public License 1.0.0".<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-OSI-0BSD_21-0" class="reference"><a href="#cite_note-OSI-0BSD-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> It was created by Rob Landley and first used in <a href="/wiki/Toybox" title="Toybox">Toybox</a> when he was disappointed after using GPL license in <a href="/wiki/BusyBox" title="BusyBox">BusyBox</a>.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1244412712"><blockquote class="templatequote"><p>Copyright (C) [year] by [copyright holder] <[email]> </p><p>Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted. </p><p> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.<sup id="cite_ref-OSI-0BSD_21-1" class="reference"><a href="#cite_note-OSI-0BSD-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup></p></blockquote> <div class="mw-heading mw-heading3"><h3 id="Other_variations">Other variations</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=7" title="Edit section: Other variations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/SPDX" class="mw-redirect" title="SPDX">SPDX</a> License List contains extra BSD license variations. Examples include:<sup id="cite_ref-SPDX_License_List_1-4" class="reference"><a href="#cite_note-SPDX_License_List-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <ul><li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">BSD-1-Clause</code>, a license with only the source code retaining clause, used by Berkeley Software Design in the 1990s,<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> and later used by the <a href="/wiki/Boost_Software_License" class="mw-redirect" title="Boost Software License">Boost Software License</a>. OSI approved since 2020.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup></li> <li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">BSD-2-Clause-Patent</code>, a variation of BSD-2-Clause with a patent grant. OSI approved since 2017.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup></li> <li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">BSD-3-Clause-No-Nuclear-Warranty</code>, a variation of BSD-3-Clause that adds that a piece of software is not licensed for use in a <a href="/wiki/Nuclear_facility" class="mw-redirect" title="Nuclear facility">nuclear facility</a>.</li></ul> <div class="mw-heading mw-heading2"><h2 id="License_compatibility">License compatibility</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=8" title="Edit section: License compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/License_compatibility" title="License compatibility">License compatibility</a></div> <div class="mw-heading mw-heading3"><h3 id="Commercial_license_compatibility">Commercial license compatibility</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=9" title="Edit section: Commercial license compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The FreeBSD project argues on the advantages of BSD-style licenses for companies and commercial use-cases due to their license compatibility with <a href="/wiki/Proprietary_software" title="Proprietary software">proprietary</a> licenses and general flexibility, stating that the BSD-style licenses place only "minimal restrictions on future behavior" and are not "legal time-bombs", unlike <a href="/wiki/Copyleft_license" class="mw-redirect" title="Copyleft license">copyleft licenses</a>.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> The BSD License allows proprietary use and allows the software released under the license to be incorporated into proprietary products. Works based on the material may be released under a proprietary license as closed source software, allowing usual commercial usages under them. </p> <div class="mw-heading mw-heading3"><h3 id="FOSS_compatibility">FOSS compatibility</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=10" title="Edit section: FOSS compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The 3-clause BSD license, like most <a href="/wiki/Permissive_licenses" class="mw-redirect" title="Permissive licenses">permissive licenses</a>, is compatible with almost all <a href="/wiki/Free_and_open-source_software" title="Free and open-source software">FOSS</a> licenses (and as well proprietary licenses).<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </p><p>Two variants of the license, the New BSD License/Modified BSD License (3-clause),<sup id="cite_ref-FSF-ModifiedBSD_8-5" class="reference"><a href="#cite_note-FSF-ModifiedBSD-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> and the Simplified BSD License/FreeBSD License (2-clause)<sup id="cite_ref-FSF-FreeBSD_12-4" class="reference"><a href="#cite_note-FSF-FreeBSD-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> have been verified as <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GPL</a>-<a href="/wiki/License_compatibility" title="License compatibility">compatible</a> <a href="/wiki/Free_software_license" class="mw-redirect" title="Free software license">free software licenses</a> by the Free Software Foundation, and have been vetted as <a href="/wiki/Open_source_license" class="mw-redirect" title="Open source license">open source licenses</a> by the <a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">Open Source Initiative</a>.<sup id="cite_ref-osi_5-5" class="reference"><a href="#cite_note-osi-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The <a href="#4-clause">original, 4-clause BSD license</a> has not been accepted as an open source license and, although the original is considered to be a free software license by the FSF, the FSF does not consider it to be compatible with the GPL due to the advertising clause.<sup id="cite_ref-FSF-OriginalBSD_4-4" class="reference"><a href="#cite_note-FSF-OriginalBSD-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Reception_and_usage">Reception and usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=11" title="Edit section: Reception and usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1224211176">.mw-parser-output .quotebox{background-color:#F9F9F9;border:1px solid #aaa;box-sizing:border-box;padding:10px;font-size:88%;max-width:100%}.mw-parser-output .quotebox.floatleft{margin:.5em 1.4em .8em 0}.mw-parser-output .quotebox.floatright{margin:.5em 0 .8em 1.4em}.mw-parser-output .quotebox.centered{overflow:hidden;position:relative;margin:.5em auto .8em auto}.mw-parser-output .quotebox.floatleft span,.mw-parser-output .quotebox.floatright span{font-style:inherit}.mw-parser-output .quotebox>blockquote{margin:0;padding:0;border-left:0;font-family:inherit;font-size:inherit}.mw-parser-output .quotebox-title{text-align:center;font-size:110%;font-weight:bold}.mw-parser-output .quotebox-quote>:first-child{margin-top:0}.mw-parser-output .quotebox-quote:last-child>:last-child{margin-bottom:0}.mw-parser-output .quotebox-quote.quoted:before{font-family:"Times New Roman",serif;font-weight:bold;font-size:large;color:gray;content:" “ ";vertical-align:-45%;line-height:0}.mw-parser-output .quotebox-quote.quoted:after{font-family:"Times New Roman",serif;font-weight:bold;font-size:large;color:gray;content:" ” ";line-height:0}.mw-parser-output .quotebox .left-aligned{text-align:left}.mw-parser-output .quotebox .right-aligned{text-align:right}.mw-parser-output .quotebox .center-aligned{text-align:center}.mw-parser-output .quotebox .quote-title,.mw-parser-output .quotebox .quotebox-quote{display:block}.mw-parser-output .quotebox cite{display:block;font-style:normal}@media screen and (max-width:640px){.mw-parser-output .quotebox{width:100%!important;margin:0 0 .8em!important;float:none!important}}</style><div class="quotebox pullquote floatright" style="width:250px; ;"> <blockquote class="quotebox-quote left-aligned" style=""> <p><i>Over the years I've become convinced that the BSD license is great for code you don't care about. I'll use it myself. If there’s a library routine that I just want to say 'hey, this is useful to anybody and I’m not going to maintain this,' I’ll put it under the BSD license.</i> </p> </blockquote> <p style="padding-bottom: 0;"><cite class="left-aligned" style="">-- <a href="/wiki/Linus_Torvalds" title="Linus Torvalds">Linus Torvalds</a> at LinuxCon 2016<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup></cite></p> </div> <p>The BSD license family is one of the oldest and most broadly used license families in the free and open-source software ecosystem, and has been the inspiration for a number of other licenses. Many FOSS software projects use a BSD license, for instance the BSD OS family (FreeBSD etc.), <a href="/wiki/Google" title="Google">Google</a>'s <a href="/wiki/Bionic_(software)" title="Bionic (software)">Bionic</a> or Toybox. As of 2015<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=BSD_licenses&action=edit">[update]</a></sup> the BSD 3-clause license ranked in popularity number five according to Black Duck Software<sup id="cite_ref-blackduck2015_31-0" class="reference"><a href="#cite_note-blackduck2015-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> and sixth according to <a href="/wiki/GitHub" title="GitHub">GitHub</a> data.<sup id="cite_ref-github2015_32-0" class="reference"><a href="#cite_note-github2015-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=12" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/28px-Free_and_open-source_software_logo_%282009%29.svg.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/42px-Free_and_open-source_software_logo_%282009%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/56px-Free_and_open-source_software_logo_%282009%29.svg.png 2x" data-file-width="512" data-file-height="512" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Free_and_open-source_software" title="Portal:Free and open-source software">Free and open-source software portal</a></span></li></ul> <ul><li><a href="/wiki/Comparison_of_free_and_open-source_software_licenses" title="Comparison of free and open-source software licenses">Comparison of free and open-source software licenses</a></li> <li><a href="/wiki/Category:Software_using_the_BSD_license" title="Category:Software using the BSD license">Software using the BSD license (category)</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=13" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-SPDX_License_List-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-SPDX_License_List_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-SPDX_License_List_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-SPDX_License_List_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-SPDX_License_List_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-SPDX_License_List_1-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://spdx.org/licenses/">"SPDX License List"</a>. <i>spdx.org</i>. SPDX Working Group.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=spdx.org&rft.atitle=SPDX+License+List&rft_id=https%3A%2F%2Fspdx.org%2Flicenses%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBostic1988" class="citation newsgroup cs1">Bostic, Keith (15 June 1988). <a rel="nofollow" class="external text" href="https://groups.google.com/g/comp.sys.tahoe/c/50ManvdM1-s">"4.3BSD-tahoe release"</a>. <a href="/wiki/Usenet_newsgroup" title="Usenet newsgroup">Newsgroup</a>: <a rel="nofollow" class="external text" href="news:comp.sys.tahoe">comp.sys.tahoe</a><span class="reference-accessdate">. Retrieved <span class="nowrap">5 December</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=4.3BSD-tahoe+release&rft.pub=comp.sys.tahoe&rft.date=1988-06-15&rft.aulast=Bostic&rft.aufirst=Keith&rft_id=https%3A%2F%2Fgroups.google.com%2Fg%2Fcomp.sys.tahoe%2Fc%2F50ManvdM1-s&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-DFSG-licences-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-DFSG-licences_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DFSG-licences_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.debian.org/legal/licenses/">"License information"</a>. Debian<span class="reference-accessdate">. Retrieved <span class="nowrap">18 February</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=License+information&rft.pub=Debian&rft_id=http%3A%2F%2Fwww.debian.org%2Flegal%2Flicenses%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-FSF-OriginalBSD-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-FSF-OriginalBSD_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FSF-OriginalBSD_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FSF-OriginalBSD_4-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-FSF-OriginalBSD_4-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-FSF-OriginalBSD_4-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/license-list.html#OriginalBSD">"Original BSD license"</a>. <i>Various Licenses and Comments about Them</i>. Free Software Foundation<span class="reference-accessdate">. Retrieved <span class="nowrap">2 October</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Various+Licenses+and+Comments+about+Them&rft.atitle=Original+BSD+license&rft_id=https%3A%2F%2Fwww.gnu.org%2Flicenses%2Flicense-list.html%23OriginalBSD&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-osi-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-osi_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-osi_5-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-osi_5-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-osi_5-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-osi_5-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-osi_5-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.opensource.org/licenses/bsd-license.php">"The BSD License:Licensing"</a>. 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Software Package Data Exchange (SPDX). 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">30 May</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=BSD+1-Clause+License&rft.pub=Software+Package+Data+Exchange+%28SPDX%29&rft.date=2018&rft_id=https%3A%2F%2Fspdx.org%2Flicenses%2FBSD-1-Clause.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://svnweb.freebsd.org/base/head/include/ifaddrs.h?revision=62606&view=markup">"Log of /head/include/ifaddrs.h"</a>. svnweb.freebsd.org<span class="reference-accessdate">. Retrieved <span class="nowrap">30 May</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Log+of+%2Fhead%2Finclude%2Fifaddrs.h&rft.pub=svnweb.freebsd.org&rft_id=https%3A%2F%2Fsvnweb.freebsd.org%2Fbase%2Fhead%2Finclude%2Fifaddrs.h%3Frevision%3D62606%26view%3Dmarkup&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://opensource.org/license/bsd-1-clause">"1-clause BSD License – Open Source Initiative"</a>. Open Source Initiative. 13 March 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">26 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=1-clause+BSD+License+%E2%80%93+Open+Source+Initiative&rft.pub=Open+Source+Initiative&rft.date=2020-03-13&rft_id=https%3A%2F%2Fopensource.org%2Flicense%2Fbsd-1-clause&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://opensource.org/license/bsdpluspatent">"BSD+Patent – Open Source Initiative"</a>. Open Source Initiative. 4 April 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">26 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=BSD%2BPatent+%E2%80%93+Open+Source+Initiative&rft.pub=Open+Source+Initiative&rft.date=2017-04-04&rft_id=https%3A%2F%2Fopensource.org%2Flicense%2Fbsdpluspatent&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMontague2013" class="citation web cs1">Montague, Bruce (13 November 2013). <a rel="nofollow" class="external text" href="http://www.freebsd.org/doc/en_US.ISO8859-1/articles/bsdl-gpl/article.html">"Why you should use a BSD style license for your Open Source Project – GPL Advantages and Disadvantages"</a>. <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a><span class="reference-accessdate">. Retrieved <span class="nowrap">28 November</span> 2015</span>. <q>In contrast to the GPL, which is designed to prevent the proprietary commercialization of Open Source code, the BSD license places minimal restrictions on future behavior. This allows BSD code to remain Open Source or become integrated into <a href="/wiki/Commercial_software" title="Commercial software">commercial</a> solutions, as a project's or company's needs change. In other words, the BSD license does not become a legal time-bomb at any point in the development process. In addition, since the BSD license does not come with the legal complexity of the GPL or LGPL licenses, it allows developers and companies to spend their time creating and promoting good code rather than worrying if that code violates licensing.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Why+you+should+use+a+BSD+style+license+for+your+Open+Source+Project+%E2%80%93+GPL+Advantages+and+Disadvantages&rft.pub=FreeBSD&rft.date=2013-11-13&rft.aulast=Montague&rft.aufirst=Bruce&rft_id=http%3A%2F%2Fwww.freebsd.org%2Fdoc%2Fen_US.ISO8859-1%2Farticles%2Fbsdl-gpl%2Farticle.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHanwell2014" class="citation web cs1">Hanwell, Marcus D. (28 January 2014). <a rel="nofollow" class="external text" href="http://opensource.com/business/14/1/what-license-should-i-use-open-source-project">"Should I use a permissive license? Copyleft? Or something in the middle?"</a>. opensource.com<span class="reference-accessdate">. Retrieved <span class="nowrap">30 May</span> 2015</span>. <q>Permissive licensing simplifies things One reason the business world, and more and more developers [...], favor permissive licenses is in the simplicity of reuse. The license usually only pertains to the source code that is licensed and makes no attempt to infer any conditions upon any other component, and because of this there is no need to define what constitutes a derived work. I have also never seen a license compatibility chart for permissive licenses; it seems that they are all compatible.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Should+I+use+a+permissive+license%3F+Copyleft%3F+Or+something+in+the+middle%3F&rft.pub=opensource.com&rft.date=2014-01-28&rft.aulast=Hanwell&rft.aufirst=Marcus+D.&rft_id=http%3A%2F%2Fopensource.com%2Fbusiness%2F14%2F1%2Fwhat-license-should-i-use-open-source-project&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-29">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150617130550/https://joinup.ec.europa.eu/software/page/licence_compatibility_and_interoperability">"Licence Compatibility and Interoperability"</a>. <i>Open-Source Software – Develop, share, and reuse open source software for public administrations</i>. joinup.ec.europa.eu. Archived from <a rel="nofollow" class="external text" href="https://joinup.ec.europa.eu/software/page/licence_compatibility_and_interoperability">the original</a> on 17 June 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">30 May</span> 2015</span>. <q>The licences for distributing free or open source software (FOSS) are divided in two families: permissive and copyleft. Permissive licences (BSD, MIT, X11, Apache, Zope) are generally compatible and interoperable with most other licences, tolerating to merge, combine or improve the covered code and to re-distribute it under many licences (including non-free or "proprietary").</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Open-Source+Software+%E2%80%93+Develop%2C+share%2C+and+reuse+open+source+software+for+public+administrations&rft.atitle=Licence+Compatibility+and+Interoperability&rft_id=https%3A%2F%2Fjoinup.ec.europa.eu%2Fsoftware%2Fpage%2Flicence_compatibility_and_interoperability&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-30">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://fossforce.com/2016/09/torvalds-linuxcon-permissive-licenses-org-charts/">Torvalds at LinuxCon Part III: Permissive Licenses and Org Charts</a> FOSS Force, 2016</span> </li> <li id="cite_note-blackduck2015-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-blackduck2015_31-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160719043600/https://www.blackducksoftware.com/top-open-source-licenses">"Top 20 licenses"</a>. Black Duck Software. 19 November 2015. Archived from <a rel="nofollow" class="external text" href="http://www.blackducksoftware.com/resources/data/top-20-licenses">the original</a> on 19 July 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">19 November</span> 2015</span>. <q>1. MIT license 24%, 2. GNU General Public License (GPL) 2.0 23%, 3. Apache License 16%, 4. GNU General Public License (GPL) 3.0 9%, 5. BSD License 2.0 (3-clause, New or Revised) License 6%, 6. GNU Lesser General Public License (LGPL) 2.1 5%, 7. Artistic License (Perl) 4%, 8. GNU Lesser General Public License (LGPL) 3.0 2%, 9. Microsoft Public License 2%, 10. Eclipse Public License (EPL) 2%</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Top+20+licenses&rft.pub=Black+Duck+Software&rft.date=2015-11-19&rft_id=http%3A%2F%2Fwww.blackducksoftware.com%2Fresources%2Fdata%2Ftop-20-licenses&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> <li id="cite_note-github2015-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-github2015_32-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBalter2015" class="citation web cs1">Balter, Ben (9 March 2015). <a rel="nofollow" class="external text" href="https://github.com/blog/1964-license-usage-on-github-com">"Open source license usage on GitHub.com"</a>. <a href="/wiki/Github.com" class="mw-redirect" title="Github.com">github.com</a><span class="reference-accessdate">. Retrieved <span class="nowrap">21 November</span> 2015</span>. <q><span class="cs1-kern-left"></span>"1 MIT 44.69%, 2 Other 15.68%, 3 GPLv2 12.96%, 4 Apache 11.19%, 5 GPLv3 8.88%, 6 BSD 3-clause 4.53%, 7 Unlicense 1.87%, 8 BSD 2-clause 1.70%, 9 LGPLv3 1.30%, 10 AGPLv3 1.05%</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Open+source+license+usage+on+GitHub.com&rft.pub=github.com&rft.date=2015-03-09&rft.aulast=Balter&rft.aufirst=Ben&rft_id=https%3A%2F%2Fgithub.com%2Fblog%2F1964-license-usage-on-github-com&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABSD+licenses" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=BSD_licenses&action=edit&section=14" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.oreilly.com/catalog/opensources/book/kirkmck.html"><i>Twenty Years of Berkeley Unix: From AT&T-Owned to Freely Redistributable</i></a>, Marshall Kirk McKusick, in: Open Sources: Voices from the Open Source Revolution, O'Reilly 1999</li> <li><a rel="nofollow" class="external text" href="https://urchin.earth.li/~twic/The_Amazing_Disappearing_BSD_License.html">The Amazing Disappearing BSD License</a></li> <li><a rel="nofollow" class="external text" href="http://www.linfo.org/bsdlicense.html">BSD License Definition</a> – by The Linux Information Project (LINFO)</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist 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title="Bob Fabry">Bob Fabry</a></li> <li><a href="/wiki/Keith_Bostic_(software_engineer)" title="Keith Bostic (software engineer)">Keith Bostic</a></li> <li><a href="/wiki/Marshall_Kirk_McKusick" title="Marshall Kirk McKusick">Marshall Kirk McKusick</a></li> <li><a href="/wiki/Michael_J._Karels" title="Michael J. Karels">Michael J. Karels</a></li> <li><a href="/wiki/Bill_Joy" title="Bill Joy">Bill Joy</a></li> <li><a href="/wiki/Samuel_Leffler" class="mw-redirect" title="Samuel Leffler">Samuel Leffler</a></li> <li><a href="/wiki/Jordan_Hubbard" title="Jordan Hubbard">Jordan Hubbard</a></li> <li><a href="/wiki/Theo_de_Raadt" title="Theo de Raadt">Theo de Raadt</a></li> <li><a href="/wiki/Poul-Henning_Kamp" title="Poul-Henning Kamp">Poul-Henning Kamp</a></li> <li><a href="/wiki/Matthew_Dillon" title="Matthew Dillon">Matthew Dillon</a></li> <li><a href="/wiki/Ozalp_Babaoglu" class="mw-redirect" title="Ozalp Babaoglu">Ozalp Babaoglu</a></li> <li><a href="/wiki/Lynne_Jolitz" title="Lynne Jolitz">Lynne</a> and <a href="/wiki/William_Jolitz" title="William Jolitz">William Jolitz</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Derivatives</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Active</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a> <ul><li><a href="/wiki/GhostBSD" title="GhostBSD">GhostBSD</a></li></ul></li> <li><a href="/wiki/OpenBSD" title="OpenBSD">OpenBSD</a></li> <li><a href="/wiki/NetBSD" title="NetBSD">NetBSD</a></li> <li><a href="/wiki/DragonFly_BSD" title="DragonFly BSD">DragonFly BSD</a></li> <li><a href="/wiki/MidnightBSD" title="MidnightBSD">MidnightBSD</a></li> <li><a href="/wiki/MirOS_BSD" title="MirOS BSD">MirOS BSD</a></li> <li><a href="/wiki/Junos_OS" title="Junos OS">Junos OS</a></li> <li><a href="/wiki/Darwin_(operating_system)" title="Darwin (operating system)">Darwin</a> <ul><li><a href="/wiki/MacOS" title="MacOS">macOS</a></li> <li><a href="/wiki/IOS" title="IOS">iOS</a> <ul><li><a href="/wiki/AudioOS" class="mw-redirect" title="AudioOS">audioOS</a></li> <li><a href="/wiki/IPadOS" title="IPadOS">iPadOS</a></li> <li><a href="/wiki/TvOS" title="TvOS">tvOS</a></li> <li><a href="/wiki/WatchOS" title="WatchOS">watchOS</a> <ul><li><a href="/wiki/BridgeOS" title="BridgeOS">bridgeOS</a></li></ul></li></ul></li></ul></li> <li><a href="/wiki/PlayStation_3_system_software" title="PlayStation 3 system software">PS3</a>/<a href="/wiki/PlayStation_4_system_software" title="PlayStation 4 system software">PS4</a>/<a href="/wiki/PlayStation_Vita_system_software" title="PlayStation Vita system software">PS Vita operating system</a></li> <li><a href="/wiki/List_of_BSD_operating_systems" title="List of BSD operating systems">Full list</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Discontinued</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/386BSD" title="386BSD">386BSD</a></li> <li><a href="/wiki/BSD/OS" title="BSD/OS">BSD/OS</a></li> <li><a href="/wiki/SunOS" title="SunOS">SunOS</a></li> <li><a href="/wiki/TrueOS" title="TrueOS">TrueOS</a></li> <li><a href="/wiki/Ultrix" title="Ultrix">Ultrix</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Companies</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Sleepycat_Software" title="Sleepycat Software">Sleepycat Software</a></li> <li><a href="/wiki/Walnut_Creek_CDROM" title="Walnut Creek CDROM">Walnut Creek CDROM</a></li> <li><a href="/wiki/Berkeley_Software_Design" title="Berkeley Software Design">Berkeley Software Design</a></li> <li><a href="/wiki/IXsystems" title="IXsystems">iXsystems</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other topics</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_BSD_operating_systems" title="Comparison of BSD operating systems">Comparison</a></li> <li><a href="/wiki/History_of_the_Berkeley_Software_Distribution" title="History of the Berkeley Software Distribution">History</a></li> <li><a class="mw-selflink selflink">Licensing</a></li> <li><a href="/wiki/BSD_Daemon" title="BSD Daemon">BSD Daemon</a></li> <li><a href="/wiki/Lumina_(desktop_environment)" title="Lumina (desktop environment)">Lumina</a></li> <li><a href="/wiki/Computer_Systems_Research_Group" title="Computer Systems Research Group">Computer Systems Research Group</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" 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href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:FOSS" title="Template:FOSS"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:FOSS" title="Template talk:FOSS"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:FOSS" title="Special:EditPage/Template:FOSS"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Free_and_open-source_software" style="font-size:114%;margin:0 4em"><a href="/wiki/Free_and_open-source_software" title="Free and open-source software">Free and open-source software</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">General</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternative_terms_for_free_software" title="Alternative terms for free software">Alternative terms for free software</a></li> <li><a href="/wiki/Comparison_of_open-source_and_closed-source_software" title="Comparison of open-source and closed-source software">Comparison of open-source and closed-source software</a></li> <li><a href="/wiki/Comparison_of_source-code-hosting_facilities" title="Comparison of source-code-hosting facilities">Comparison of source-code-hosting facilities</a></li> <li><a href="/wiki/Free_software" title="Free software">Free software</a></li> <li><a href="/wiki/List_of_free_software_project_directories" title="List of free software project directories">Free software project directories</a></li> <li><a href="/wiki/Gratis_versus_libre" title="Gratis versus libre">Gratis versus libre</a></li> <li><a href="/wiki/Long-term_support" title="Long-term support">Long-term support</a></li> <li><a href="/wiki/Open-source_software" title="Open-source software">Open-source software</a></li> <li><a href="/wiki/Open-source_software_development" title="Open-source software development">Open-source software development</a></li> <li><a href="/wiki/Outline_of_free_software" title="Outline of free software">Outline</a></li> <li><a href="/wiki/Timeline_of_free_and_open-source_software" title="Timeline of free and open-source software">Timeline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_free_and_open-source_software_packages" title="List of free and open-source software packages">Software<br />packages</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_free_software_for_audio" title="Comparison of free software for audio">Audio</a></li> <li><a href="/wiki/List_of_open-source_bioinformatics_software" title="List of open-source bioinformatics software">Bioinformatics</a></li> <li><a href="/wiki/List_of_open-source_codecs" title="List of open-source codecs">Codecs</a></li> <li><a href="/wiki/Comparison_of_open-source_configuration_management_software" title="Comparison of open-source configuration management software">Configuration management</a></li> <li><a href="/wiki/Device_driver" title="Device driver">Drivers</a> <ul><li><a href="/wiki/Free_and_open-source_graphics_device_driver" title="Free and open-source graphics device driver">Graphics</a></li> <li><a href="/wiki/Comparison_of_open-source_wireless_drivers" title="Comparison of open-source wireless drivers">Wireless</a></li></ul></li> <li><a href="/wiki/List_of_open-source_health_software" title="List of open-source health software">Health</a></li> <li><a href="/wiki/List_of_open-source_software_for_mathematics" title="List of open-source software for mathematics">Mathematics</a></li> <li><a href="/wiki/List_of_office_suites" title="List of office suites">Office suites</a></li> <li><a href="/wiki/Comparison_of_open-source_operating_systems" title="Comparison of open-source operating systems">Operating systems</a></li> <li><a href="/wiki/List_of_open-source_routing_platforms" title="List of open-source routing platforms">Routing</a></li> <li><a href="/wiki/List_of_free_television_software" title="List of free television software">Television</a></li> <li><a href="/wiki/List_of_open-source_video_games" title="List of open-source video games">Video games</a></li> <li><a href="/wiki/List_of_free_and_open-source_web_applications" title="List of free and open-source web applications">Web applications</a> <ul><li><a href="/wiki/Comparison_of_shopping_cart_software" title="Comparison of shopping cart software">E-commerce</a></li></ul></li> <li><a href="/wiki/List_of_free_and_open-source_Android_applications" title="List of free and open-source Android applications">Android apps</a></li> <li><a href="/wiki/List_of_free_and_open-source_iOS_applications" title="List of free and open-source iOS applications">iOS apps</a></li> <li><a href="/wiki/List_of_commercial_open-source_applications_and_services" title="List of commercial open-source applications and services">Commercial</a></li> <li><a href="/wiki/List_of_formerly_proprietary_software" title="List of formerly proprietary software">Formerly proprietary</a></li> <li><a href="/wiki/List_of_formerly_free_and_open-source_software" class="mw-redirect" title="List of formerly free and open-source software">Formerly open-source</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Community_of_practice" title="Community of practice">Community</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_software_movement" title="Free software movement">Free software movement</a></li> <li><a href="/wiki/History_of_free_and_open-source_software" title="History of free and open-source software">History</a></li> <li><a href="/wiki/Open-source-software_movement" title="Open-source-software movement">Open-source-software movement</a></li> <li><a href="/wiki/List_of_free-software_events" title="List of free-software events">Events</a></li> <li><a href="/wiki/Open-source_software_advocacy" title="Open-source software advocacy">Advocacy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_free_and_open-source_software_organizations" title="List of free and open-source software organizations">Organisations</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_Software_Movement_of_India" title="Free Software Movement of India">Free Software Movement of India</a></li> <li><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Free-software_license" title="Free-software license">Licenses</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Academic_Free_License" title="Academic Free License">AFL</a></li> <li><a href="/wiki/Apache_License" title="Apache License">Apache</a></li> <li><a href="/wiki/Apple_Public_Source_License" title="Apple Public Source License">APSL</a></li> <li><a href="/wiki/Artistic_License" title="Artistic License">Artistic</a></li> <li><a href="/wiki/Beerware" title="Beerware">Beerware</a></li> <li><a class="mw-selflink selflink">BSD</a></li> <li><a href="/wiki/Creative_Commons_license" title="Creative Commons license">Creative Commons</a></li> <li><a href="/wiki/Common_Development_and_Distribution_License" title="Common Development and Distribution License">CDDL</a></li> <li><a href="/wiki/Eclipse_Public_License" title="Eclipse Public License">EPL</a></li> <li><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> <ul><li><a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU GPL</a></li> <li><a href="/wiki/GNU_Affero_General_Public_License" title="GNU Affero General Public License">GNU AGPL</a></li> <li><a href="/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License">GNU LGPL</a></li></ul></li> <li><a href="/wiki/ISC_license" title="ISC license">ISC</a></li> <li><a href="/wiki/MIT_License" title="MIT License">MIT</a></li> <li><a href="/wiki/Mozilla_Public_License" title="Mozilla Public License">MPL</a></li> <li><a href="/wiki/Python_License" title="Python License">Python</a></li> <li><a href="/wiki/Python_Software_Foundation_License" title="Python Software Foundation License">Python Software Foundation License</a></li> <li><a href="/wiki/Shared_Source_Initiative" title="Shared Source Initiative">Shared Source Initiative</a></li> <li><a href="/wiki/Sleepycat_License" class="mw-redirect" title="Sleepycat License">Sleepycat</a></li> <li><a href="/wiki/Unlicense" title="Unlicense">Unlicense</a></li> <li><a href="/wiki/WTFPL" title="WTFPL">WTFPL</a></li> <li><a href="/wiki/Zlib_License" title="Zlib License">zlib</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Types_and_standards" scope="row" class="navbox-group" style="width:1%">Types and<br /> standards</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_free_and_open-source_software_licenses" title="Comparison of free and open-source software licenses">Comparison of licenses</a></li> <li><a href="/wiki/Contributor_License_Agreement" title="Contributor License Agreement">Contributor License Agreement</a></li> <li><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></li> <li><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian Free Software Guidelines</a></li> <li><a href="/wiki/Definition_of_Free_Cultural_Works" title="Definition of Free Cultural Works">Definition of Free Cultural Works</a></li> <li><a href="/wiki/Free_license" title="Free license">Free license</a></li> <li><a href="/wiki/The_Free_Software_Definition" title="The Free Software Definition">The Free Software Definition</a></li> <li><a href="/wiki/The_Open_Source_Definition" title="The Open Source Definition">The Open Source Definition</a></li> <li><a href="/wiki/Open-source_license" title="Open-source license">Open-source license</a></li> <li><a href="/wiki/Permissive_software_license" title="Permissive software license">Permissive software license</a></li> <li><a href="/wiki/Public_domain" title="Public domain">Public domain</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Challenges</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Digital_rights_management" title="Digital rights management">Digital rights management</a></li> <li><a href="/wiki/License_proliferation" title="License proliferation">License proliferation</a></li> <li><a href="/wiki/Mozilla_software_rebranded_by_Debian" class="mw-redirect" title="Mozilla software rebranded by Debian">Mozilla software rebranding</a></li> <li><a href="/wiki/Proprietary_device_driver" class="mw-redirect" title="Proprietary device driver">Proprietary device drivers</a></li> <li><a href="/wiki/Proprietary_firmware" title="Proprietary firmware">Proprietary firmware</a></li> <li><a href="/wiki/Proprietary_software" title="Proprietary software">Proprietary software</a></li> <li><a href="/wiki/SCO%E2%80%93Linux_disputes" title="SCO–Linux disputes">SCO/Linux controversies</a></li> 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title="Open-core model">Open-core model</a></li> <li><a href="/wiki/Open-source_hardware" title="Open-source hardware">Open-source hardware</a></li> <li><a href="/wiki/Shared_Source_Initiative" title="Shared Source Initiative">Shared Source Initiative</a></li> <li><a href="/wiki/Source-available_software" title="Source-available software">Source-available software</a></li> <li><i><a href="/wiki/The_Cathedral_and_the_Bazaar" title="The Cathedral and the Bazaar">The Cathedral and the Bazaar</a></i></li> <li><i><a href="/wiki/Revolution_OS" title="Revolution OS">Revolution OS</a></i></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold"><div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" 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