For you vim lovers and Mac users out there, Marked 2 [1] in live reload mode works pretty great. For vim I like the vim-markdown plugin [2].<p>I get live preview, 9 different styles, code formatting, the ability to export to word, PDF, HTML, ODT, and RTF...and for blogging you get a word count at the bottom. It even analyzes your text for writing style like passive voice, long words, etc.<p>[1] - <a href="http://marked2app.com/" rel="nofollow">http://marked2app.com/</a>
[2] - <a href="https://github.com/plasticboy/vim-markdown" rel="nofollow">https://github.com/plasticboy/vim-markdown</a>