DOD creates its own version of sourceforge

Defense Department officials have launched a new Web site where
developers can work on open-source software projects specifically for
DOD. Defense
Information Systems Agency (DISA) mentioned that it was sourceforge.net upgraded to meet DOD security requirements.

Source: http://fcw.com/articles/2009/01/30/dod-launches-site-to-develop-open-sou...

More details on Forge.mil is available at:
http://blogs.open.collab.net/oncollabnet/2008/12/forgemil-projec.html