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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">2.3</span> <span>Other variations</span> </div> </a> <ul id="toc-Other_variations-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Ambiguity_and_variants" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ambiguity_and_variants"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Ambiguity and variants</span> </div> </a> <ul id="toc-Ambiguity_and_variants-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Comparison_to_other_licenses" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Comparison_to_other_licenses"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Comparison to other licenses</span> </div> </a> <button aria-controls="toc-Comparison_to_other_licenses-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 Comparison to other licenses subsection</span> </button> <ul id="toc-Comparison_to_other_licenses-sublist" class="vector-toc-list"> <li id="toc-BSD" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#BSD"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>BSD</span> </div> </a> <ul id="toc-BSD-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-GNU_General_Public_License" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#GNU_General_Public_License"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>GNU General Public License</span> </div> </a> <ul id="toc-GNU_General_Public_License-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Relation_to_patents" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Relation_to_patents"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Relation to patents</span> </div> </a> <ul id="toc-Relation_to_patents-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Origins" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Origins"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Origins</span> </div> </a> <ul id="toc-Origins-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Reception" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Reception"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Reception</span> </div> </a> <ul id="toc-Reception-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">8</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">9</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Further reading</span> </div> </a> <ul id="toc-Further_reading-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">11</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">MIT License</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" aria-label="Go to an article in another language. Available in 42 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-42" 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">42 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%A9_%D8%A5%D9%85_%D8%A2%D9%8A_%D8%AA%D9%8A" title="رخصة إم آي تي – Arabic" lang="ar" hreflang="ar" data-title="رخصة إم آي تي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/MIT_License" title="MIT License – Minnan" lang="nan" hreflang="nan" data-title="MIT License" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/MIT_%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7" title="MIT лиценз – Bulgarian" lang="bg" hreflang="bg" data-title="MIT лиценз" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Llic%C3%A8ncia_X11" title="Llicència X11 – Catalan" lang="ca" hreflang="ca" data-title="Llicència X11" 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/Licence_MIT" title="Licence MIT – Czech" lang="cs" hreflang="cs" data-title="Licence MIT" 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/MIT-licensen" title="MIT-licensen – Danish" lang="da" hreflang="da" data-title="MIT-licensen" 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/MIT-Lizenz" title="MIT-Lizenz – German" lang="de" hreflang="de" data-title="MIT-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/MIT_litsents" title="MIT litsents – Estonian" lang="et" hreflang="et" data-title="MIT 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_MIT" title="Licencia MIT – Spanish" lang="es" hreflang="es" data-title="Licencia MIT" 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/MIT-permesilo" title="MIT-permesilo – Esperanto" lang="eo" hreflang="eo" data-title="MIT-permesilo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</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_%D8%A7%D9%85%E2%80%8C%D8%A2%DB%8C%E2%80%8C%D8%AA%DB%8C" title="پروانه ام‌آی‌تی – Persian" lang="fa" hreflang="fa" data-title="پروانه ام‌آی‌تی" 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_MIT" title="Licence MIT – French" lang="fr" hreflang="fr" data-title="Licence MIT" 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_MIT" title="Licenza MIT – Galician" lang="gl" hreflang="gl" data-title="Licenza MIT" 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/MIT_%ED%97%88%EA%B0%80%EC%84%9C" title="MIT 허가서 – Korean" lang="ko" hreflang="ko" data-title="MIT 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%8F%E0%A4%AE%E0%A4%86%E0%A4%88%E0%A4%9F%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="एमआईटी लाइसेंस – Hindi" lang="hi" hreflang="hi" data-title="एमआईटी लाइसेंस" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Licenco_MIT" title="Licenco MIT – Ido" lang="io" hreflang="io" data-title="Licenco MIT" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Lisensi_MIT" title="Lisensi MIT – Indonesian" lang="id" hreflang="id" data-title="Lisensi MIT" 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/Licenza_MIT" title="Licenza MIT – Italian" lang="it" hreflang="it" data-title="Licenza MIT" 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_MIT" title="רישיון MIT – Hebrew" lang="he" hreflang="he" data-title="רישיון MIT" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/MIT_%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D1%8F%D1%81%D1%8B" title="MIT лицензиясы – Kyrgyz" lang="ky" hreflang="ky" data-title="MIT лицензиясы" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/MIT_licence" title="MIT licence – Latvian" lang="lv" hreflang="lv" data-title="MIT licence" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%8E%E0%B4%82%E0%B4%90%E0%B4%9F%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="എംഐടി അനുമതിപത്രം – Malayalam" lang="ml" hreflang="ml" data-title="എംഐടി 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_MIT" title="Lesen MIT – Malay" lang="ms" hreflang="ms" data-title="Lesen MIT" 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/MIT-licentie" title="MIT-licentie – Dutch" lang="nl" hreflang="nl" data-title="MIT-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/MIT_License" title="MIT License – Japanese" lang="ja" hreflang="ja" data-title="MIT License" 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/MIT-lisensen" title="MIT-lisensen – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="MIT-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/Licencja_MIT" title="Licencja MIT – Polish" lang="pl" hreflang="pl" data-title="Licencja MIT" 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_MIT" title="Licença MIT – Portuguese" lang="pt" hreflang="pt" data-title="Licença MIT" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</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_MIT" title="Лицензия MIT – Russian" lang="ru" hreflang="ru" data-title="Лицензия MIT" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Licenca_MIT" title="Licenca MIT – Albanian" lang="sq" hreflang="sq" data-title="Licenca MIT" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/MIT_License" title="MIT License – Simple English" lang="en-simple" hreflang="en-simple" data-title="MIT License" 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/MIT_licencia" title="MIT licencia – Slovak" lang="sk" hreflang="sk" data-title="MIT 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_MIT" title="Licenca MIT – Slovenian" lang="sl" hreflang="sl" data-title="Licenca MIT" 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/%D0%9C%D0%98%D0%A2_%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D1%86%D0%B0" title="МИТ лиценца – Serbian" lang="sr" hreflang="sr" data-title="МИТ лиценца" 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-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/MIT-lisenssi" title="MIT-lisenssi – Finnish" lang="fi" hreflang="fi" data-title="MIT-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/MIT-licens" title="MIT-licens – Swedish" lang="sv" hreflang="sv" data-title="MIT-licens" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AA%E0%B8%B1%E0%B8%8D%E0%B8%8D%E0%B8%B2%E0%B8%AD%E0%B8%99%E0%B8%B8%E0%B8%8D%E0%B8%B2%E0%B8%95%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B8%AA%E0%B8%96%E0%B8%B2%E0%B8%9A%E0%B8%B1%E0%B8%99%E0%B9%80%E0%B8%97%E0%B8%84%E0%B9%82%E0%B8%99%E0%B9%82%E0%B8%A5%E0%B8%A2%E0%B8%B5%E0%B9%81%E0%B8%A1%E0%B8%AA%E0%B8%8B%E0%B8%B2%E0%B8%8A%E0%B8%B9%E0%B9%80%E0%B8%8B%E0%B8%95%E0%B8%AA%E0%B9%8C" title="สัญญาอนุญาตของสถาบันเทคโนโลยีแมสซาชูเซตส์ – Thai" lang="th" hreflang="th" data-title="สัญญาอนุญาตของสถาบันเทคโนโลยีแมสซาชูเซตส์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/MIT_Lisans%C4%B1" title="MIT Lisansı – Turkish" lang="tr" hreflang="tr" data-title="MIT Lisansı" 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_MIT" title="Ліцензія MIT – Ukrainian" lang="uk" hreflang="uk" data-title="Ліцензія MIT" 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_MIT" title="Giấy phép MIT – Vietnamese" lang="vi" hreflang="vi" data-title="Giấy phép MIT" 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/MIT%E8%A8%B1%E5%8F%AF%E8%AD%89" title="MIT許可證 – Cantonese" lang="yue" hreflang="yue" data-title="MIT許可證" 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.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">MIT License</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:MIT_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/MIT_logo.svg/100px-MIT_logo.svg.png" decoding="async" width="100" height="52" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/MIT_logo.svg/150px-MIT_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/MIT_logo.svg/200px-MIT_logo.svg.png 2x" data-file-width="321" data-file-height="166" /></a></span></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/Massachusetts_Institute_of_Technology" title="Massachusetts Institute of Technology">Massachusetts Institute of Technology</a></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%;">MIT<br />(see list for more)<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<sup id="cite_ref-dfsg-licenses_2-0" class="reference"><a href="#cite_note-dfsg-licenses-2"><span class="cite-bracket">[</span>2<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-gnu-license-list-expat_3-0" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-gnu-license-list-x11_4-0" class="reference"><a href="#cite_note-gnu-license-list-x11-4"><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%;">Yes<sup id="cite_ref-osi-licenses_5-0" class="reference"><a href="#cite_note-osi-licenses-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-gnu-license-list-expat_3-1" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-gnu-license-list-x11_4-1" class="reference"><a href="#cite_note-gnu-license-list-x11-4"><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-gnu-license-list-expat_3-2" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-gnu-license-list-x11_4-2" class="reference"><a href="#cite_note-gnu-license-list-x11-4"><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 <b>MIT License</b> is a <a href="/wiki/Permissive_software_license" title="Permissive software license">permissive software license</a> originating at the <a href="/wiki/Massachusetts_Institute_of_Technology" title="Massachusetts Institute of Technology">Massachusetts Institute of Technology</a> (MIT)<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> in the late 1980s.<sup id="cite_ref-history_7-0" class="reference"><a href="#cite_note-history-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> As a permissive license, it puts very few restrictions on reuse and therefore has high <a href="/wiki/License_compatibility" title="License compatibility">license compatibility</a>.<sup id="cite_ref-opensoucecomp_8-0" class="reference"><a href="#cite_note-opensoucecomp-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-comaptible_9-0" class="reference"><a href="#cite_note-comaptible-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>Unlike <a href="/wiki/Copyleft" title="Copyleft">copyleft</a> software licenses, the MIT License also permits reuse within <a href="/wiki/Proprietary_software" title="Proprietary software">proprietary software</a>, provided that all copies of the software or its substantial portions include a copy of the terms of the MIT License and also a copyright notice.<sup id="cite_ref-comaptible_9-1" class="reference"><a href="#cite_note-comaptible-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> In 2015, the MIT License was the most popular software license on <a href="/wiki/GitHub" title="GitHub">GitHub</a>.<sup id="cite_ref-github2015_11-0" class="reference"><a href="#cite_note-github2015-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>Notable projects that use the MIT License include the <a href="/wiki/X_Window_System" title="X Window System">X Window System</a>, <a href="/wiki/Ruby_on_Rails" title="Ruby on Rails">Ruby on Rails</a>, <a href="/wiki/Node.js" title="Node.js">Node.js</a>, <a href="/wiki/Lua_(programming_language)" title="Lua (programming language)">Lua</a>, <a href="/wiki/JQuery" title="JQuery">jQuery</a>, <a href="/wiki/.NET" title=".NET">.NET</a>, <a href="/wiki/Angular_(web_framework)" title="Angular (web framework)">Angular</a>, and <a href="/wiki/React_(JavaScript_library)" class="mw-redirect" title="React (JavaScript library)">React</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="License_terms">License terms</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=1" title="Edit section: License terms"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The MIT License has the identifier <code>MIT</code> in the <a href="/wiki/SPDX" class="mw-redirect" title="SPDX">SPDX</a> License List.<sup id="cite_ref-SPDX-MIT_12-0" class="reference"><a href="#cite_note-SPDX-MIT-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-OSI-MIT_13-0" class="reference"><a href="#cite_note-OSI-MIT-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> It is also known as the "<a href="#Ambiguity_and_variants">Expat License</a>".<sup id="cite_ref-gnu-license-list-expat_3-3" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> It has the following terms:<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p> <pre>Copyright (c) <year> <copyright holders> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. </pre> <div class="mw-heading mw-heading2"><h2 id="Variations">Variations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=2" title="Edit section: Variations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="X11_License">X11 License</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=3" title="Edit section: X11 License"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <b>X11 License</b>, also known as the <b>MIT/X Consortium License</b>, is a variation on the MIT license, most known for its usage by the <a href="/wiki/X_Consortium" class="mw-redirect" title="X Consortium">X Consortium</a>.<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> It has the identifier <code>X11</code> in the <a href="/wiki/SPDX" class="mw-redirect" title="SPDX">SPDX</a> License List.<sup id="cite_ref-SPDX-X11_16-0" class="reference"><a href="#cite_note-SPDX-X11-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-gnu-license-list-x11_4-3" class="reference"><a href="#cite_note-gnu-license-list-x11-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>It differs from the MIT License mainly by an additional clause restricting use of the copyright holders' name for advertisement. </p><p>It has the following terms:<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> <pre>Copyright (C) <date> <copyright holders> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of <copyright holders> shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from <copyright holders>.</pre> <div class="mw-heading mw-heading3"><h3 id="MIT_No_Attribution_License">MIT No Attribution License</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=4" title="Edit section: MIT No Attribution 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">MIT No Attribution License</caption><tbody><tr><th scope="row" class="infobox-label" style="width:45%;">Author</th><td class="infobox-data" style="width:55%;">Roman Mamedov, <a href="/wiki/Amazon_Web_Services" title="Amazon Web Services">Amazon Web Services</a></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">28 March 2018</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%;">MIT-0</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%;">n/a</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%;">n/a</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_approval_mit-0_18-0" class="reference"><a href="#cite_note-osi_approval_mit-0-18"><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><tr><th scope="row" class="infobox-label" style="width:45%;">Website</th><td class="infobox-data" style="width:55%;"><a rel="nofollow" class="external free" href="https://github.com/aws/mit-0">https://github.com/aws/mit-0</a></td></tr></tbody></table> <p>The MIT No Attribution License, a variation of the MIT License, has the identifier <code>MIT-0</code> in the <a href="/wiki/SPDX" class="mw-redirect" title="SPDX">SPDX</a> License List.<sup id="cite_ref-SPDX-MIT0_19-0" class="reference"><a href="#cite_note-SPDX-MIT0-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> A request for legacy approval to the <a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">Open Source Initiative</a> was filed on May 15, 2020,<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> which led to a formal approval on August 5, 2020.<sup id="cite_ref-osi_approval_mit-0_18-1" class="reference"><a href="#cite_note-osi_approval_mit-0-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> By doing so, it forms a <a href="/wiki/Public-domain-equivalent_license" title="Public-domain-equivalent license">public-domain-equivalent license</a>, the same way as <a href="/wiki/BSD_licenses#0-clause" title="BSD licenses">BSD Zero Clause</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 has the following terms: </p> <pre>MIT No Attribution Copyright <YEAR> <COPYRIGHT HOLDER> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. </pre> <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=MIT_License&action=edit&section=5" 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 MIT license variations. Examples include:<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> </p> <ul><li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">MIT-advertising</code>, a variation with an additional advertising clause.</li></ul> <p>There is also the Anti-Capitalist Software License (ACSL),<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> built off of the MIT license. It is not Open Source, since it limits the permissions granted to individuals and organizations that do not operate under capitalist structures, like non-profits and cooperatives. </p> <div class="mw-heading mw-heading2"><h2 id="Ambiguity_and_variants">Ambiguity and variants</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=6" title="Edit section: Ambiguity and variants"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The name "MIT License" is potentially ambiguous. The Massachusetts Institute of Technology has used many licenses for software since its creation; for example, MIT offers four licensing options for the <a href="/wiki/FFTW" title="FFTW">FFTW</a><sup id="cite_ref-MIT-FFTW-licensing_22-0" class="reference"><a href="#cite_note-MIT-FFTW-licensing-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> C source code library, one of which is the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GPL v2.0</a> and the other three of which are not <a href="/wiki/Open-source_software" title="Open-source software">open-source</a>. The term "MIT License" has also been used to refer to the <b>Expat License</b> (used for the XML parsing library <a href="/wiki/Expat_(software)" title="Expat (software)">Expat</a>) and to the <b>X11 License</b> (also called "<b>MIT/X Consortium License</b>"; used for <a href="/wiki/X_Window_System" title="X Window System">X Window System</a> by the <a href="/wiki/MIT_X_Consortium" class="mw-redirect" title="MIT X Consortium">MIT X Consortium</a>).<sup id="cite_ref-gnu-license-list-expat_3-4" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Furthermore, the "MIT License" as published by the <a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">Open Source Initiative</a> is the same as the Expat License.<sup id="cite_ref-OSI-MIT_13-1" class="reference"><a href="#cite_note-OSI-MIT-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Due to this differing use of terms, some prefer to avoid the name "MIT License".<sup id="cite_ref-history_7-1" class="reference"><a href="#cite_note-history-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> argues that the term is misleading and ambiguous, and recommends against its use.<sup id="cite_ref-gnu-license-list-expat_3-5" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>The X Consortium was dissolved late in 1996, and its assets transferred to <a href="/wiki/The_Open_Group" title="The Open Group">The Open Group</a>,<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> which released X11R6 initially under the same license. The X11 License<sup id="cite_ref-gnu-license-list-x11_4-4" class="reference"><a href="#cite_note-gnu-license-list-x11-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and the X11R6 "MIT License" chosen for <a href="/wiki/Ncurses" title="Ncurses">ncurses</a> by the Free Software Foundation<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> both include the following clause, absent in the Expat License:<sup id="cite_ref-gnu-license-list-expat_3-6" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </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>Except as contained in this notice, the name(s) of the above copyright holders shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization.</p></blockquote> <p>As of 2020, the successor to the X Window System is the <a href="/wiki/X.Org_Server" title="X.Org Server">X.Org Server</a>, which is licensed under what is effectively the common MIT license, according to the X.org licensing page:<sup id="cite_ref-xorg-license_25-0" class="reference"><a href="#cite_note-xorg-license-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </p> <blockquote><p>The X.Org Foundation has chosen the following format of the MIT License as the preferred format for code included in the X Window System distribution. This is a slight variant of the common MIT license form published by the Open Source Initiative</p></blockquote> <p>The "slight variant" is the addition of the phrase "(including the next paragraph)" to the second paragraph of the license text, resulting in: "The above copyright notice and this permission notice (including the next paragraph) shall be included in all copies or substantial portions of the Software." This inclusion clarifies that the liability paragraph must also be included for the conditions of the license to be met.<sup id="cite_ref-xorg-license_25-1" class="reference"><a href="#cite_note-xorg-license-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </p><p>The license-management features at popular source code repository <a href="/wiki/GitHub" title="GitHub">GitHub</a>, as well as its "Choose a License" service, do not differentiate between MIT/Expat license variants. The text of the Expat variant is presented as simply the "MIT License" (represented by the <a href="/wiki/Metadata" title="Metadata">metadata</a> tag <code>mit</code>).<sup id="cite_ref-github-license-docs_26-0" class="reference"><a href="#cite_note-github-license-docs-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-choosealicense-mit_27-0" class="reference"><a href="#cite_note-choosealicense-mit-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Comparison_to_other_licenses">Comparison to other licenses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=7" title="Edit section: Comparison to other licenses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="BSD">BSD</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=8" title="Edit section: BSD"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The original <a href="/wiki/BSD_licenses" title="BSD licenses">BSD license</a> also includes a clause requiring all advertising of the software to display a notice crediting its authors. This "advertising clause" (since disavowed by UC Berkeley<sup id="cite_ref-update_28-0" class="reference"><a href="#cite_note-update-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup>) is present in the modified MIT License used by <a href="/wiki/XFree86" title="XFree86">XFree86</a>. </p><p>The <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> combines text from both the MIT and BSD licenses; the license grant and disclaimer are taken from the MIT License. </p><p>The <a href="/wiki/ISC_license" title="ISC license">ISC license</a> contains similarities to both the MIT and simplified BSD licenses, the biggest difference being that language deemed unnecessary by the <a href="/wiki/Berne_Convention" title="Berne Convention">Berne Convention</a> is omitted.<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><sup id="cite_ref-theo2008_30-0" class="reference"><a href="#cite_note-theo2008-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="GNU_General_Public_License">GNU General Public License</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=9" title="Edit section: GNU General Public License"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The GPL is explicit about the <a href="/wiki/Patent" title="Patent">patent</a> rights an owner grants when the code or <a href="/wiki/Derivative_work" title="Derivative work">derivative work</a> is distributed,<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> the MIT license does not discuss patents. Moreover, the GPL license impacts derivative works, but the MIT license does not. </p> <div class="mw-heading mw-heading2"><h2 id="Relation_to_patents">Relation to patents</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=10" title="Edit section: Relation to patents"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Like the BSD license, the MIT license does not include an express patent license although some commentators<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> state that the grant of rights covers all potential restrictions including patents. Both the BSD and the MIT licenses were drafted before the patentability of software was generally recognized under US law.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Apache_License" title="Apache License">Apache License</a> version 2.0<sup id="cite_ref-gnu-license-list-expat_3-7" class="reference"><a href="#cite_note-gnu-license-list-expat-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> is a similarly permissive license that includes an explicit contributor's patent license. Of specific relevance to US jurisdictions, the MIT license uses the terms "sell" and "use" that are also used in defining the rights of a patent holder in <a href="/wiki/Title_35_of_the_United_States_Code" title="Title 35 of the United States Code">Title 35 of the United States Code</a> section 154. This has been construed by some commentators<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> as an unconventional but implicit license in the US to use any underlying patents. </p> <div class="mw-heading mw-heading2"><h2 id="Origins">Origins</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=11" title="Edit section: Origins"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>One of the originators of the MIT license, computer scientist <a href="/wiki/Jerry_Saltzer" title="Jerry Saltzer">Jerry Saltzer</a>, has published his recollections of its early development, along with documentary evidence.<sup id="cite_ref-saltzer-2020_37-0" class="reference"><a href="#cite_note-saltzer-2020-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-history_7-2" class="reference"><a href="#cite_note-history-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Reception">Reception</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=12" title="Edit section: Reception"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As of 2020<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MIT_License&action=edit">[update]</a></sup>, according to WhiteSource Software<sup id="cite_ref-whitesource2020_38-0" class="reference"><a href="#cite_note-whitesource2020-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> the MIT license was used in 27% of four million open source packages. 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=MIT_License&action=edit">[update]</a></sup>, according to Black Duck Software<sup id="cite_ref-blackduck2015_39-0" class="reference"><a href="#cite_note-blackduck2015-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template noprint noexcerpt Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:NOTRS" class="mw-redirect" title="Wikipedia:NOTRS"><span title="Source is very informal and in contradiction with Das 2016; no methodology or explanation is given as to how 'or later' licenses are being considered. (November 2016)">better source needed</span></a></i>]</sup> and a 2015 blog<sup id="cite_ref-github2015_11-1" class="reference"><a href="#cite_note-github2015-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> from <a href="/wiki/GitHub" title="GitHub">GitHub</a>, the MIT license was the most popular <a href="/wiki/Open-source_license" title="Open-source license">open-source license</a>, with the <a href="/wiki/GNU_GPLv2" class="mw-redirect" title="GNU GPLv2">GNU GPLv2</a> coming second in their sample of repositories. </p> <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=MIT_License&action=edit&section=13" 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/ISC_license" title="ISC license">ISC license</a>—similar to the MIT license, but with language deemed unnecessary removed</li> <li><a href="/wiki/Category:Software_using_the_MIT_license" title="Category:Software using the MIT license">Category:Software using the MIT license</a></li> <li><a href="/wiki/Suno_AI#Songs" title="Suno AI">Suno AI § Songs</a> — a song of MIT License</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=MIT_License&action=edit&section=14" 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></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%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-dfsg-licenses-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-dfsg-licenses_2-0">^</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://www.debian.org/legal/licenses/">"License information"</a>. <i>The <a href="/wiki/Debian_Project" class="mw-redirect" title="Debian Project">Debian Project</a></i>. <a href="/wiki/Software_in_the_Public_Interest" title="Software in the Public Interest">Software in the Public Interest</a> (published July 12, 2017). 1997–2017. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170720142826/https://www.debian.org/legal/licenses/">Archived</a> from the original on July 20, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">July 20,</span> 2017</span>. <q>This page presents the opinion of some debian-legal contributors on how certain licenses follow the Debian Free Software Guidelines (DFSG). ... Licenses currently found in Debian main include: ... Expat/MIT-style licenses ...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Debian+Project&rft.atitle=License+information&rft.date=1997%2F2017&rft_id=https%3A%2F%2Fwww.debian.org%2Flegal%2Flicenses%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-gnu-license-list-expat-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-gnu-license-list-expat_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-6"><sup><i><b>g</b></i></sup></a> <a href="#cite_ref-gnu-license-list-expat_3-7"><sup><i><b>h</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.en.html#Expat">"Various Licenses and Comments about Them"</a>. <i>The <a href="/wiki/GNU_Project" title="GNU Project">GNU Project</a></i>. <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> (published April 4, 2017). 2014–2017. Expat License. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170720140022/https://www.gnu.org/licenses/license-list.en.html">Archived</a> from the original on July 20, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">July 20,</span> 2017</span>. <q>This is a lax, permissive non-copyleft free software license, compatible with the GNU GPL. It is sometimes ambiguously referred to as the MIT License.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+GNU+Project&rft.atitle=Various+Licenses+and+Comments+about+Them&rft.pages=Expat+License&rft.date=2014%2F2017&rft_id=https%3A%2F%2Fwww.gnu.org%2Flicenses%2Flicense-list.en.html%23Expat&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-gnu-license-list-x11-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-gnu-license-list-x11_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-gnu-license-list-x11_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-gnu-license-list-x11_4-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-gnu-license-list-x11_4-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-gnu-license-list-x11_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.en.html#X11License">"Various Licenses and Comments about Them"</a>. <i>The <a href="/wiki/GNU_Project" title="GNU Project">GNU Project</a></i>. <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> (published April 4, 2017). 2014–2017. X11 License. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170720140022/https://www.gnu.org/licenses/license-list.en.html">Archived</a> from the original on July 20, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">July 20,</span> 2017</span>. <q>This is a lax permissive non-copyleft free software license, compatible with the GNU GPL. ... This license is sometimes called the MIT license, but that term is misleading, since MIT has used many licenses for software.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+GNU+Project&rft.atitle=Various+Licenses+and+Comments+about+Them&rft.pages=X11+License&rft.date=2014%2F2017&rft_id=https%3A%2F%2Fwww.gnu.org%2Flicenses%2Flicense-list.en.html%23X11License&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-osi-licenses-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-osi-licenses_5-0">^</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://opensource.org/licenses/alphabetical">"Licenses by Name"</a>. <i><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">Open Source Initiative</a></i>. n.d. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170720141629/https://opensource.org/licenses/alphabetical">Archived</a> from the original on July 20, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">July 20,</span> 2017</span>. <q>The following licenses have been approved by the OSI. ... MIT License (MIT) ...</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+Initiative&rft.atitle=Licenses+by+Name&rft_id=https%3A%2F%2Fopensource.org%2Flicenses%2Falphabetical&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRosen2005" class="citation book cs1">Rosen, Lawrence E. (2005). <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/56012651"><i>Open Source Licensing: Software Freedom and Intellectual Property Law</i></a>. Upper Saddle River, NJ: <a href="/wiki/Prentice_Hall_PTR" class="mw-redirect" title="Prentice Hall PTR">Prentice Hall PTR</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-13-148787-6" title="Special:BookSources/0-13-148787-6"><bdi>0-13-148787-6</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/56012651">56012651</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Open+Source+Licensing%3A+Software+Freedom+and+Intellectual+Property+Law&rft.place=Upper+Saddle+River%2C+NJ&rft.pub=Prentice+Hall+PTR&rft.date=2005&rft_id=info%3Aoclcnum%2F56012651&rft.isbn=0-13-148787-6&rft.aulast=Rosen&rft.aufirst=Lawrence+E.&rft_id=https%3A%2F%2Fwww.worldcat.org%2Foclc%2F56012651&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-history-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-history_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-history_7-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-history_7-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHaff" class="citation web cs1">Haff, Gordon. <a rel="nofollow" class="external text" href="https://opensource.com/article/19/4/history-mit-license">"The mysterious history of the MIT License"</a>. <i>opensource.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">July 30,</span> 2019</span>. <q>The date? The best single answer is probably 1987. But the complete story is more complicated and even a little mysterious. [...] Precursors from 1985. The X Consortium or X11 License variant from 1987. Or the Expat License from 1998 or 1999.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=opensource.com&rft.atitle=The+mysterious+history+of+the+MIT+License&rft.aulast=Haff&rft.aufirst=Gordon&rft_id=https%3A%2F%2Fopensource.com%2Farticle%2F19%2F4%2Fhistory-mit-license&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-opensoucecomp-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-opensoucecomp_8-0">^</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. (January 28, 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">May 30,</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%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-comaptible-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-comaptible_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-comaptible_9-1"><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="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. Archived from <a rel="nofollow" class="external text" href="https://joinup.ec.europa.eu/software/page/licence_compatibility_and_interoperability">the original</a> on June 17, 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">May 30,</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+-+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%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</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://softwareengineering.stackexchange.com/questions/264700/paid-software-includes-mit-licensed-library-does-that-put-my-app-under-mit-too">"Paid software includes MIT licensed library, does that put my app under MIT too?"</a>. <i>Software Engineering Stack Exchange</i><span class="reference-accessdate">. Retrieved <span class="nowrap">July 21,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Software+Engineering+Stack+Exchange&rft.atitle=Paid+software+includes+MIT+licensed+library%2C+does+that+put+my+app+under+MIT+too%3F&rft_id=https%3A%2F%2Fsoftwareengineering.stackexchange.com%2Fquestions%2F264700%2Fpaid-software-includes-mit-licensed-library-does-that-put-my-app-under-mit-too&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-github2015-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-github2015_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-github2015_11-1"><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 id="CITEREFBalter2015" class="citation web cs1">Balter, Ben (March 9, 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>. <i>The GitHub Blog</i><span class="reference-accessdate">. Retrieved <span class="nowrap">November 21,</span> 2015</span>. <q>1 MIT 44.69%, 2 Other 15.68%</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+GitHub+Blog&rft.atitle=Open+source+license+usage+on+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%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-SPDX-MIT-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-SPDX-MIT_12-0">^</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://spdx.org/licenses/MIT.html">"MIT License"</a>. 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Retrieved <span class="nowrap">July 7,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=tldrlegal.com&rft.atitle=MIT+License+Explained+in+Plain+English+-+TLDRLegal&rft_id=https%3A%2F%2Ftldrlegal.com%2Flicense%2Fmit-license&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2">"3.3. X Consortium", <a rel="nofollow" class="external text" href="http://www.xfree86.org/4.0/LICENSE3.html#6"><i>3. X/MIT Licenses</i></a>, The XFree86 Project, March 2004</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=3.3.+X+Consortium&rft.btitle=3.+X%2FMIT+Licenses&rft.pub=The+XFree86+Project&rft.date=2004-03&rft_id=http%3A%2F%2Fwww.xfree86.org%2F4.0%2FLICENSE3.html%236&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-SPDX-X11-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-SPDX-X11_16-0">^</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://spdx.org/licenses/X11.html">"X11 License"</a>. <i>spdx.org</i>. 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Retrieved <span class="nowrap">December 1,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=FSFE+-+Free+Software+Foundation+Europe&rft.atitle=Patents+and+GPLv3+-+FSFE&rft_id=https%3A%2F%2Ffsfe.org%2Factivities%2Fgplv3%2Fpatents-and-gplv3.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</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/20210123091649/https://opensource.com/article/18/3/patent-grant-mit-license">"Why so little love for the patent grant in the MIT License?"</a>. January 23, 2021. Archived from <a rel="nofollow" class="external text" href="https://opensource.com/article/18/3/patent-grant-mit-license">the original</a> on January 23, 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">January 23,</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=Why+so+little+love+for+the+patent+grant+in+the+MIT+License%3F&rft.date=2021-01-23&rft_id=https%3A%2F%2Fopensource.com%2Farticle%2F18%2F3%2Fpatent-grant-mit-license&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-33">^</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/20200503103939/http://oss-watch.ac.uk/resources/fossandpatents">"Free and open source software and your patents"</a>. May 3, 2020. Archived from <a rel="nofollow" class="external text" href="http://oss-watch.ac.uk/resources/fossandpatents">the original</a> on May 3, 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">May 3,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Free+and+open+source+software+and+your+patents&rft.date=2020-05-03&rft_id=http%3A%2F%2Foss-watch.ac.uk%2Fresources%2Ffossandpatents&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text">Stern and Allen, Open Source Licensing, p. 495 in Understanding the Intellectual Property License 2013 (Practicing Law Institute 2013)</span> </li> <li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</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/20200503110018/https://writing.kemitchell.com/2016/09/21/MIT-License-Line-by-Line.html">"The MIT License, Line by Line"</a>. May 3, 2020. Archived from <a rel="nofollow" class="external text" href="https://writing.kemitchell.com/2016/09/21/MIT-License-Line-by-Line.html">the original</a> on May 3, 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">May 3,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+MIT+License%2C+Line+by+Line&rft.date=2020-05-03&rft_id=https%3A%2F%2Fwriting.kemitchell.com%2F2016%2F09%2F21%2FMIT-License-Line-by-Line.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-36">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChristian_H._Nadan2009" class="citation cs2">Christian H. Nadan (2009), <a rel="nofollow" class="external text" href="https://download.pli.edu/WebContent/chbs/185480/185480_Chapter22_Adv_Licensing_Agreements_2017_Vol_02_CC121601854800207140.htm">"Closing the Loophole: Open Source Licensing & the Implied Patent License"</a>, <i>The Computer & Internet Lawyer</i>, <b>26</b> (8), Aspen Law & Business, <q>By using patent terms like "deal in", "use", and "sell", the MIT license grant is more likely to be deemed to include express patent rights than the BSD license.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Computer+%26+Internet+Lawyer&rft.atitle=Closing+the+Loophole%3A+Open+Source+Licensing+%26+the+Implied+Patent+License&rft.volume=26&rft.issue=8&rft.date=2009&rft.au=Christian+H.+Nadan&rft_id=https%3A%2F%2Fdownload.pli.edu%2FWebContent%2Fchbs%2F185480%2F185480_Chapter22_Adv_Licensing_Agreements_2017_Vol_02_CC121601854800207140.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-saltzer-2020-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-saltzer-2020_37-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSaltzer2020" class="citation journal cs1">Saltzer, Jerome H (November 18, 2020). <a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FMAHC.2020.3020234">"The origin of the "MIT license"<span class="cs1-kern-right"></span>"</a>. <i>IEEE Annals of the History of Computing</i>. <b>42</b> (4): 94–98. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FMAHC.2020.3020234">10.1109/MAHC.2020.3020234</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1934-1547">1934-1547</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=IEEE+Annals+of+the+History+of+Computing&rft.atitle=The+origin+of+the+%22MIT+license%22&rft.volume=42&rft.issue=4&rft.pages=94-98&rft.date=2020-11-18&rft_id=info%3Adoi%2F10.1109%2FMAHC.2020.3020234&rft.issn=1934-1547&rft.aulast=Saltzer&rft.aufirst=Jerome+H&rft_id=https%3A%2F%2Fdoi.org%2F10.1109%252FMAHC.2020.3020234&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span> <span style="position:relative; top: -2px;"><span typeof="mw:File"><a href="/wiki/Open_access" title="open access publication – free to read"><img alt="Open access icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Open_Access_logo_PLoS_transparent.svg/9px-Open_Access_logo_PLoS_transparent.svg.png" decoding="async" width="9" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Open_Access_logo_PLoS_transparent.svg/14px-Open_Access_logo_PLoS_transparent.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/77/Open_Access_logo_PLoS_transparent.svg/18px-Open_Access_logo_PLoS_transparent.svg.png 2x" data-file-width="640" data-file-height="1000" /></a></span></span></span> </li> <li id="cite_note-whitesource2020-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-whitesource2020_38-0">^</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/20200503111426/https://resources.whitesourcesoftware.com/blog-whitesource/top-open-source-licenses-trends-and-predictions">"Open Source Licenses in 2020: Trends and Predictions"</a>. May 3, 2020. Archived from <a rel="nofollow" class="external text" href="https://resources.whitesourcesoftware.com/blog-whitesource/top-open-source-licenses-trends-and-predictions">the original</a> on May 3, 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">May 3,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Open+Source+Licenses+in+2020%3A+Trends+and+Predictions&rft.date=2020-05-03&rft_id=https%3A%2F%2Fresources.whitesourcesoftware.com%2Fblog-whitesource%2Ftop-open-source-licenses-trends-and-predictions&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></span> </li> <li id="cite_note-blackduck2015-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-blackduck2015_39-0">^</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/20130904051147/http://www.blackducksoftware.com/resources/data/top-20-licenses">"Top 20 licenses"</a>. Black Duck Software. November 19, 2015. Archived from <a rel="nofollow" class="external text" href="http://www.blackducksoftware.com/resources/data/top-20-licenses">the original</a> on September 4, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">November 19,</span> 2015</span>. <q>1. MIT license 24%, 2. GNU General Public License (GPL) 2.0 23%</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%3AMIT+License" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MIT_License&action=edit&section=15" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMitchell2016" class="citation web cs1">Mitchell, Kyle E. (September 21, 2016). <a rel="nofollow" class="external text" href="https://writing.kemitchell.com/2016/09/21/MIT-License-Line-by-Line.html">"The MIT License, Line by Line"</a>. <i>/dev/lawyer</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160928235700/https://writing.kemitchell.com/2016/09/21/MIT-License-Line-by-Line.html">Archived</a> from the original on September 28, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">September 28,</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=%2Fdev%2Flawyer&rft.atitle=The+MIT+License%2C+Line+by+Line&rft.date=2016-09-21&rft.aulast=Mitchell&rft.aufirst=Kyle+E.&rft_id=https%3A%2F%2Fwriting.kemitchell.com%2F2016%2F09%2F21%2FMIT-License-Line-by-Line.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMIT+License" class="Z3988"></span></li></ul> <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=MIT_License&action=edit&section=16" 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="https://fedoraproject.org/wiki/Licensing:MIT?rd=Licensing/MIT">MIT License variants</a></li> <li><a rel="nofollow" class="external text" href="http://www.opensource.org/licenses/MIT">The MIT License template</a> (Open Source Initiative official site)</li> <li><a rel="nofollow" class="external text" href="http://www.jclark.com/xml/copying.txt">Expat License</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220721145318/http://www.jclark.com/xml/copying.txt">Archived</a> July 21, 2022, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="https://xfree86.org/3.3.6/COPYRIGHT2.html#3">X11 License</a></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 li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline 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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 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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 href="/wiki/BSD_licenses" title="BSD licenses">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 class="mw-selflink selflink">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> <li><a href="/wiki/Software_patents_and_free_software" title="Software patents and free software">Software patents</a></li> <li><a href="/wiki/Open-source_software_security" title="Open-source software security">Software security</a></li> <li><a href="/wiki/Tivoization" title="Tivoization">Tivoization</a></li> <li><a href="/wiki/Trusted_Computing" title="Trusted Computing">Trusted Computing</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related <br />topics</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/Fork_(software_development)" title="Fork (software development)">Forking</a></li> <li><i><a href="/wiki/GNU_Manifesto" title="GNU Manifesto">GNU Manifesto</a></i></li> <li><a href="/wiki/Microsoft_Open_Specification_Promise" title="Microsoft Open Specification Promise">Microsoft Open Specification Promise</a></li> <li><a href="/wiki/Open-core_model" 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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