The Custom-TF Improvement Project is a multiplayer Quake modification that provides an experience similar to Team Fortress (and Team Fortress Classic), but allows players to customize their soldiers however they want.
The Custom-TF Improvement Project is a seperate project.
Want the latest (possibly unstable) source code? Custom-TF Improvement Project is available from Subversion:
svn co https://svn.sourceforge.net/svnroot/customtf customtf