CodePlex

Launched in June 2006, CodePlex is Microsoft’s open source project hosting site. Built on Microsoft Visual Studio® 2008 Team Foundation Server, CodePlex hosts thousands of open source projects with support for source control, bug tracking, wiki pages, release management, forums, and project statistics. Additionally, CodePlex supports source control clients for Subversion and Teamprise. As of February, 2009, more than 230,000 software projects have been registered to use our services by more than 2 million registered users, making CodePlex the largest collection of open source tools and applications on the net.