CodePlex

CodePlex was a forge website by Microsoft. While it was active, it allowed shared development of open-source software.^[1] Its features included wiki pages, source control based on Mercurial, TFVC, Subversion or Git, discussion forums, issue tracking, project tagging, RSS support, statistics, and releases.

While CodePlex once encompassed a wide variety of projects, including SQL Server, WPF and Windows Forms-related projects, its major activities were focused on .NET Framework (including ASP.NET) and SharePoint. The most prominent and used project that was born inside CodePlex, the AJAX Control Toolkit, is a joint project between the community and Microsoft.