Markdown is really a powerful way to create documents and maintain them in a pretty way. There is no changes in the way you write from a site to another, there is no mistake done on the rendering of your pages and most of all, it’s simple to learn!

• MarkdownPad (Windows) is a full-featured Markdown editor for Windows. There is a free and a paid version. The free version for me is way enough, but when looking to the paid services it tempting to buy the pro version.
• Mou (Mac) is way simpler and cleaner (normal you would say “Apple style”). It does the job with no additional flavor feature included.

Both do the job and I personally use both: MarkdownPad for professional usage and Mou for personal usage.

Do you know any other Markdown apps or even offline webapps to work with Markdown documents?