Its currently being completed and is in use on http://mods.tiki.org. Tikiwiki is ideally suited to this because it contains everything that makes up good project management already. Its just missing some feature to bring it all together.
TikiForge is scheduled to appear in 1.10, along with wiki-farms
CollabNet SourceCast- see Tigris.org and Java.net for installation examples. SourceCast is a commercial closed source project (although some customers have shared source license agreements with them).