I've been hacking at gollum (github's FOSS git-based wiki) for some time, and I might have some interesting uses for it in the education space that go well past a basic wiki.
I'am writing a gollum like wiki atm. Its not finished yet, but works already and is not far away from a (stable) release: http://github.com/entropie/oy
My problem was gollum worked not behind Apache/mod_proxy, so i was forced to write it on myself ;)
