I too use Mou and it's a great editor. I've contacted the developer a few times (http://chenluois.com/ http://chenluois.com/ - bugs and feature requests) and s/

I too use Mou and it's a great editor. I've contacted the developer a few times (http://chenluois.com/ http://chenluois.com/ - bugs and feature requests) and s/he's been very responsive and usually emailed back in a few hours. Markdown Pro (www.markdownpro.com - 6 dollars) is another great markdown editor for mac that has more features.