Development
Contact
We hang out on irc.freenode.net in the #mana channel and we're using a mailing list to communicate outside of IRC (though mailing list membership has to be manually approved so that we don't have to face spam).
Task and bug tracker
We're using Mantis, at http://bugs.manasource.org/.
Git repositories
Available at http://gitorious.org/mana.
Testing server
Running at http://testing.manasource.org on port 9601, at commits:
manaserv aa5710f62ce468fedddf9faf98bad4da1fbeb727 manaweb ef686fd55c7ba04f6324303a8b98dd3625e907a9