This is my first post, so please go easy on me if I say something stupid. Also please point me to the right direction of this question has been answered in any other places. I googled for this for a while but I did not get satisfactory answers.
I'm a big fan of GitHub and use it everyday to manage all my Open Source projects as well as paid subscription for the company that work for. I use the wiki heavily to make documentations and edit most of the contents offline with text editors and push it in git interface of the wiki.
I was wondering if there are any good offline and desktop based app that you could recommend that could help me speedup my workflow by providing a graphical WYSIWYG editor. I could just load up the file and edit it in a word processor like interface and push it in git. I don't want any solution that required a local server setup like apache, that would be overkill and there is already a web based editor in the GitHub wiki. Anything that runs on Linux or Mac OS X would be a good one for me.
Thanks in advance.
Update: While GitHub wikis are by default powered by Markdown, we use Mediawiki syntax, so I would be interested in Mediawiki graphical editor.