Sublime Text SmartMarkdown Plugin

I highly recommend the SmartMarkdown plugin for Sublime Text 2. If for no other reason than it auto-installs the Markdown header folding keyboard shortcut:

{ "keys": ["shift+tab"], "command": "global_folding", "context":
            { "key": "selector", "operator": "equal", "operand": "text.html.markdown" }

This is the quickest way to navigate a large Markdown document by top level headers.1

  1. It’s much less ugly on the Mac, but I use it (as depicted here) on Windows too. ↩︎