Many of the TUAW writers (and readers!) are fans of John Gruber's Markdown, so we tend to review both iOS and Mac apps that support Markdown. If you don't know what Markdown is or how to use it, those ...

Documentation tools mdBook, Quartz, MkDoc, and HonKit all support Markdown and work with a variety of other languages and formats. Here's a quick guide to each tool's standout features and best uses.