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.
Since the Wikis are Markdown based, I personally just use TextMate with a Markdown syntax highlighter, while you don't get the same result (since it's not rendering the HTML/CSS), you get a "feel" for the text and how it's going to look. This just allows you to focus on writing.
If your on Windows, there are plenty of other Markdown plugins for the common text editors (I've used this for Notepad++ in the past).