CONV. - Convert YouTube video to MP3, GIF or MP4
Tree - Write documents in tree-like organisation with Markdown
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.
You-Get - Command-line utility to download media contents from the web
Markdown Here - Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render...