Personally use github's gollum: https://github.com/github/gollum https://github.com/github/gollum which is pretty awesome and git-backed. Allows you to do all

Personally use github's gollum: https://github.com/github/gollum https://github.com/github/gollum which is pretty awesome and git-backed. Allows you to do all your wiki pages in markdown and a sleugh of other markup formats. Plus, did I mention git backed?!