Project manager / CVS in ASP.Net like Sourceforge.net

Hi everybody,
I'm looking for a CMS platform to be integrated in an existent asp.net web
site.
This cms platform has to be something like platforms as Microsoft Codeplex,
or Sourceforge.net; but I'd like to have an independent platform, without
the use of these services.
And, this cms should have features like project management, project info
(with roadmaps, version history etc.), download of source codes and
binaries, and, possibly, a CVS system and a bugtracker system.

For instance, is the source code of codeplex platform freely available?
Where can I find it?
Any other idea?

Thanks in advance,

--
Carmine
Webmaster di www.thetotalsite.it
Blog http://blog.thetotalsite.it