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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Peer-to-peer revision control system</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">Code Co-op</caption><tbody><tr><td colspan="2" class="infobox-image logo"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Code_Co-op.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/3/3d/Code_Co-op.png" decoding="async" width="48" height="48" class="mw-file-element" data-file-width="48" data-file-height="48" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">Reliable Software</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">1996<span class="noprint">; 29 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1996</span>)</span></td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546" /></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Final release</a></th><td class="infobox-data"><div style="margin:0px;">5.2a / June 4, 2011<span class="noprint">; 13 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2011-06-04</span>)</span></div></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://github.com/BartoszMilewski/CodeCoop">github<wbr />.com<wbr />/BartoszMilewski<wbr />/CodeCoop</a></span> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q5140021#P1324" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> </div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Windows</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Available in</th><td class="infobox-data"><a href="/wiki/English_language" title="English language">English</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/Revision_control" class="mw-redirect" title="Revision control">Revision control</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data">MIT</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20180211130625/http://www.relisoft.com/co_op/index.htm">web<wbr />.archive<wbr />.org<wbr />/web<wbr />/20180211130625<wbr />/http:<wbr />/<wbr />/www<wbr />.relisoft<wbr />.com<wbr />/co_op<wbr />/index<wbr />.htm</a></span> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q5140021?uselang=en#P856" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <p><b>Code Co-op</b> is the <a href="/wiki/Peer-to-peer" title="Peer-to-peer">peer-to-peer</a> <a href="/wiki/Revision_control" class="mw-redirect" title="Revision control">revision control</a> system made by Reliable Software. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Distinguishing_features">Distinguishing features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Code_Co-op&action=edit&section=1" title="Edit section: Distinguishing features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Code Co-op is a distributed <a href="/wiki/Revision_control" class="mw-redirect" title="Revision control">revision control</a> system of the replicated type. </p><p>It uses <a href="/wiki/Peer-to-peer" title="Peer-to-peer">peer-to-peer</a> architecture to share projects among developers and to control changes to files. Instead of using a <a href="/wiki/Centralized_database" title="Centralized database">centralized database</a> (the repository), it replicates its own database on each computer involved in the project. </p><p>The replicas are synchronized by the exchange of (differential) <i>scripts</i>. The exchange of scripts may proceed using different transports, including e-mail (support for <a href="/wiki/SMTP" class="mw-redirect" title="SMTP">SMTP</a> and <a href="/wiki/POP3" class="mw-redirect" title="POP3">POP3</a>, integration with <a href="/wiki/MAPI" title="MAPI">MAPI</a> clients, <a href="/wiki/Gmail" title="Gmail">Gmail</a>) and LAN. </p><p>Code Co-op has a built-in <a href="/wiki/Peer-to-peer_wiki" class="mw-redirect" title="Peer-to-peer wiki">peer-to-peer wiki</a> system, which can be used to integrate documentation with a software project. It is also possible to create text-based <a href="/w/index.php?title=Wiki_database&action=edit&redlink=1" class="new" title="Wiki database (page does not exist)">Wiki databases</a>, which can be queried using simplified <a href="/wiki/SQL" title="SQL">SQL</a> directly from wiki pages. </p> <div class="mw-heading mw-heading2"><h2 id="Standard_features">Standard features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Code_Co-op&action=edit&section=2" title="Edit section: Standard features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ol><li>Distributed development support through <a href="/wiki/E-mail" class="mw-redirect" title="E-mail">E-mail</a>, <a href="/wiki/Local_area_network" title="Local area network">LAN</a>, or <a href="/wiki/VPN" class="mw-redirect" title="VPN">VPN</a></li> <li>Change-based model—modifications to multiple files are checked in as one <a href="/wiki/Database_transaction" title="Database transaction">transaction</a></li> <li>File additions, deletions, renames, and moves are treated on the same level as edits—they can be added in any combination to a check-in changeset</li> <li>File changes can be reviewed before a check-in using a built-in or user-defined differ</li> <li>Synchronization changes can be reviewed in the same manner by the recipients</li> <li>Three-way visual merge</li> <li>Project history is replicated on each machine. Historical version can be reviewed, compared, or restored</li> <li>Integration with Microsoft SCC clients, including <a href="/wiki/Visual_Studio" title="Visual Studio">Visual Studio</a></li></ol> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Code_Co-op&action=edit&section=3" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Code Co-op was one of the first distributed version control systems. It debuted at the 7th Workshop on System Configuration Management in May 1997.<sup id="cite_ref-Milewski1997_1-0" class="reference"><a href="#cite_note-Milewski1997-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The development of Code Co-op started in 1996, when Reliable Software, the distributed software company that makes it, was established. Reliable Software needed a collaboration tool that would work between the <a href="/wiki/United_States" title="United States">United States</a> and <a href="/wiki/Poland" title="Poland">Poland</a>. The only dependable and affordable means of communication between the two countries was e-mail, hence the idea of using e-mail for the exchange of diffs. Of course, with such slow transport, using a centralized repository was infeasible. Each user of Code Co-op had to have a full replica of the repository, including the history of changes. </p><p>The problem was reduced to that of designing a distributed database that uses slow and unreliable transport for synchronization (later, faster LAN transport was also added). It also followed that the synchronization between multiple sites must use some kind of <a href="/wiki/Peer-to-peer" title="Peer-to-peer">peer-to-peer</a> protocol. </p><p>In 2018, the C++ source code for Code Co-op was released under the <a href="/wiki/MIT_License" title="MIT License">MIT License</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Theoretical_foundations">Theoretical foundations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Code_Co-op&action=edit&section=4" title="Edit section: Theoretical foundations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Code Co-op is an example of a <a href="/wiki/Distributed_database" title="Distributed database">distributed database</a>. Local repositories are considered the <a href="/wiki/Replication_(computer_science)" class="mw-redirect" title="Replication (computer science)">replicas</a> of this virtual database. Each check-in corresponds to a distributed commit—a non-blocking version of a <a href="/wiki/Two-phase_commit" class="mw-redirect" title="Two-phase commit">two-phase commit</a>. </p> <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=Code_Co-op&action=edit&section=5" 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"><ol class="references"> <li id="cite_note-Milewski1997-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-Milewski1997_1-0">^</a></b></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 id="CITEREFMilewski1997" class="citation conference cs1">Milewski, B. (1997). <i>Distributed source control system</i>. <a href="/wiki/International_Conference_on_Software_Engineering" title="International Conference on Software Engineering">ICSE</a>'97 SCM-7 Workshop. <i>Software Configuration Management</i>. <a href="/wiki/Lecture_Notes_in_Computer_Science" title="Lecture Notes in Computer Science">LNCS</a>. Vol. 1235. pp. <span class="nowrap">98–</span>10. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F3-540-63014-7_8">10.1007/3-540-63014-7_8</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3-540-63014-2" title="Special:BookSources/978-3-540-63014-2"><bdi>978-3-540-63014-2</bdi></a>. <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/0302-9743">0302-9743</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=conference&rft.jtitle=Software+Configuration+Management&rft.atitle=Distributed+source+control+system&rft.volume=1235&rft.pages=%3Cspan+class%3D%22nowrap%22%3E98-%3C%2Fspan%3E10&rft.date=1997&rft.issn=0302-9743&rft_id=info%3Adoi%2F10.1007%2F3-540-63014-7_8&rft.isbn=978-3-540-63014-2&rft.aulast=Milewski&rft.aufirst=B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACode+Co-op" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Code_Co-op&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20180211130625/http://www.relisoft.com/co_op/index.htm">Official website</a></span></span> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q5140021#P856" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> <p><br /> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output 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Systems with names <i>in italics</i> are no longer maintained or have planned end-of-life dates.</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Local only</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Free_and_open-source_software" title="Free and open-source software">Free/open-source</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/Revision_Control_System" title="Revision Control System">RCS</a> (1982)</li> <li><a href="/wiki/Source_Code_Control_System" title="Source Code Control System">SCCS</a> (1973)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Proprietary_software" title="Proprietary software">Proprietary</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/The_Librarian_(version_control_system)" title="The Librarian (version control system)">The Librarian</a> (1969)</li> <li><a href="/wiki/Panvalet" title="Panvalet">Panvalet</a> (1970s)</li> <li><a href="/wiki/PVCS" title="PVCS">PVCS</a> (1985)</li> <li><i><a href="/wiki/QVCS" title="QVCS">QVCS</a></i> (1991)</li></ul> </div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Revision_controlled_project_visualization-2010-24-02.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Revision_controlled_project_visualization-2010-24-02.svg/120px-Revision_controlled_project_visualization-2010-24-02.svg.png" decoding="async" width="80" height="196" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Revision_controlled_project_visualization-2010-24-02.svg/160px-Revision_controlled_project_visualization-2010-24-02.svg.png 2x" data-file-width="220" data-file-height="540" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Client–server</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Free/open-source</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/Concurrent_Versions_System" title="Concurrent Versions System">CVS</a> (1986, 1990 in C)</li> <li><a href="/wiki/CVSNT" title="CVSNT">CVSNT</a> (1998)</li> <li><a href="/wiki/QVCS" title="QVCS">QVCS Enterprise</a> (1998)</li> <li><a href="/wiki/Apache_Subversion" title="Apache Subversion">Subversion</a> (2000)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Proprietary</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/AccuRev_SCM" title="AccuRev SCM">AccuRev SCM</a> (2002)</li> <li>Azure DevOps <ul><li><a href="/wiki/Azure_DevOps_Server" title="Azure DevOps Server">Server</a> (via <a href="/wiki/Azure_DevOps_Server#TFVC" title="Azure DevOps Server">TFVC</a>) (2005)</li> <li><a href="/wiki/Microsoft_Visual_Studio#Azure_DevOps_Services" class="mw-redirect" title="Microsoft Visual Studio">Services</a> (via <a href="/wiki/Azure_DevOps_Server#TFVC" title="Azure DevOps Server">TFVC</a>) (2014)</li></ul></li> <li><a href="/wiki/Rational_ClearCase" class="mw-redirect" title="Rational ClearCase">ClearCase</a> (1992)</li> <li><i><a href="/wiki/IBM_Configuration_Management_Version_Control_(CMVC)" class="mw-redirect" title="IBM Configuration Management Version Control (CMVC)">CMVC</a></i> (1994)</li> <li><a href="/wiki/Dimensions_CM" title="Dimensions CM">Dimensions CM</a> (1980s)</li> <li><i><a href="/wiki/Apollo_Computer#History" title="Apollo Computer">DSEE</a></i> (1984)</li> <li><a href="/wiki/PTC_Integrity" title="PTC Integrity">Integrity</a> (2001)</li> <li><a href="/wiki/Perforce_Helix" class="mw-redirect" title="Perforce Helix">Perforce Helix</a> (1995)</li> <li><a href="/wiki/IBM_Software_Configuration_and_Library_Manager" title="IBM Software Configuration and Library Manager">SCLM</a> (1980s?)</li> <li><a href="/wiki/CA_Harvest_Software_Change_Manager" title="CA Harvest Software Change Manager">Software Change Manager</a> (1970s)</li> <li><a href="/wiki/StarTeam" title="StarTeam">StarTeam</a> (1995)</li> <li><a href="/wiki/Surround_SCM" title="Surround SCM">Surround SCM</a> (2002)</li> <li><a href="/wiki/Rational_Synergy" title="Rational Synergy">Synergy</a> (1990)</li> <li><a href="/wiki/Rational_Team_Concert" class="mw-redirect" title="Rational Team Concert">Team Concert</a> (2008)</li> <li><a href="/wiki/Vault_(version_control_system)" title="Vault (version control system)">Vault</a> (2003)</li> <li><i><a href="/wiki/Microsoft_Visual_SourceSafe" title="Microsoft Visual SourceSafe">Visual SourceSafe</a></i> (1994)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Distributed_version_control" title="Distributed version control">Distributed</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Free/open-source</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/BitKeeper" title="BitKeeper">BitKeeper</a></i> (2000)</li> <li><a href="/wiki/Breezy_(software)" title="Breezy (software)">Breezy</a> (2017)</li> <li><i><a class="mw-selflink selflink">Code Co-op</a></i> (1997)</li> <li><a href="/wiki/Darcs" title="Darcs">Darcs</a> (2002)</li> <li><i><a href="/wiki/Distributed_Concurrent_Versions_System" title="Distributed Concurrent Versions System">DCVS</a></i> (2002)</li> <li><a href="/wiki/Fossil_(software)" title="Fossil (software)">Fossil</a> (2007)</li> <li><a href="/wiki/Git" title="Git">Git</a> (2005)</li> <li><i><a href="/wiki/GNU_arch" title="GNU arch">GNU arch</a></i> (2001)</li> <li><a href="/wiki/GNU_Bazaar" title="GNU Bazaar">GNU Bazaar</a> (2005)</li> <li><a href="/wiki/Mercurial" title="Mercurial">Mercurial</a> (2005)</li> <li><a href="/wiki/Monotone_(software)" title="Monotone (software)">Monotone</a> (2003)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Proprietary</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Azure DevOps <ul><li><a href="/wiki/Azure_DevOps_Server" title="Azure DevOps Server">Server</a> (via Git) (2013)</li> <li><a href="/wiki/Microsoft_Visual_Studio#Azure_DevOps_Services" class="mw-redirect" title="Microsoft Visual Studio">Services</a> (via Git) (2014)</li></ul></li> <li><i><a href="/wiki/Sun_WorkShop_TeamWare" title="Sun WorkShop TeamWare">TeamWare</a></i> (1992)</li> <li><a href="/wiki/Plastic_SCM" class="mw-redirect" title="Plastic SCM">Plastic SCM</a> (2006)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</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/Baseline_(configuration_management)" title="Baseline (configuration management)">Baseline</a></li> <li><a href="/wiki/Branching_(version_control)" title="Branching (version control)">Branch</a> <ul><li><a href="/wiki/Branching_(version_control)#Development_branch" title="Branching (version control)">Trunk</a></li></ul></li> <li><a href="/wiki/Changeset" title="Changeset">Changeset</a></li> <li><a href="/wiki/Commit_(version_control)" title="Commit (version control)">Commit</a> <ul><li><a href="/wiki/Gated_commit" title="Gated commit">Gated</a></li></ul></li> <li><a href="/wiki/Delta_encoding" title="Delta encoding">Delta compression</a> <ul><li><a href="/wiki/Interleaved_deltas" title="Interleaved deltas">Interleaved</a></li></ul></li> <li><a href="/wiki/File_comparison" title="File comparison">File comparison</a></li> <li><a href="/wiki/Fork_(software_development)" title="Fork (software development)">Fork</a></li> <li><a href="/wiki/Merge_(version_control)" title="Merge (version control)">Merge</a></li> <li><a href="/wiki/Monorepo" 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