Visual Studio Team Foundation Server Express 2012 is a source code control, project management, and team collaboration platform at the core of the Microsoft suite of Application Lifecycle Management tools, which help individuals and small teams of upto 5 developers be more agile, collaborate more effectively, and deliver quality software.
Find out more and download TFS 2012 Express for free here:
http://www.microsoft.com/visualstudio/eng/products/visual-studio-team-foundation-server-express
Read more about TFS2012 and VS2005 / BIDS2005 Compatibility