High Quality Content by WIKIPEDIA articles! CodePlex is an open source project hosting website from Microsoft. It allows shared development of open source software. CodePlex is an open-source Website where engineers and computer scientists share projects and ideas Its features include wiki pages, source control based on Mercurial, Team Foundation Server or Subversion (also powered by TFS), discussion forums, issue tracking, project tagging, RSS support, statistics, and releases (ClickOnce-releases are also supported). Since January 22, 2010, Mercurial distributed source control system is supported as well, and this support has been enhanced.