Gfront is a project mainly written in JAVASCRIPT and RUBY, it's free.
sinatra based gollum frontend
gfront is a frontend app for gollum, a git based ruby wiki library. It basically is a clone of gollum's frontend component, and enhanced some features:
$ git clone [email protected]:sjoonk/gfront.git
$ cd gfront
Open app.rb and edit repo_path and disqus_id as your fit.
$ rackup (http://localhost:9292)
That's it.