The official Source Code Project website is hosted by Max Gaming Technologies, LLC. The official forum is hosted by Hard Light Productions. Visit the forum for the most up-to-date information regarding the project. You can also visit us on IRC at irc.maxgaming.net:6667 #fs2source.
All fs2_open releases can be downloaded from the Downloads section of the official SCP website. Report any bugs using Mantis.
You can browse the CVS repository online here. Current development is on the fs2_open module. The other modules are there for reference (freespace2_public is the released Volition source, fs2_icculus is a mostly complete *nix port requiring GCC 3 from Icculus).
The Doxygen output from the original Volition source code release is available here. The Guided Tour document provided with the release is an excellent introduction to the code.
Anonymous CVS access for this project is available. Instructions for setting up CVS can be found in the Developers section of the official SCP website.
The latest code base can be targeted for Windows, Mac OS X, and Linux. For Windows, installation of the DirectX 8 or 9 SDK is required.
Contact Inquisitor for write access, development mailing list access, or more information.