Another neat project is Gollum as released by Github which gives you a nice simple layout to a git-back wiki (https://github.com/github/gollum ). Development seems a little slow though, with seemingly important pull requests like this one stuck with no official response:
And you can host gitit on your own servers.
Gitit is based on pandoc, which allows you to covert to and from rst, markdown, latex, .. and a dozen more formats.