Mac CLi - OS X command line tools for developers
Tree - Write documents in tree-like organisation with Markdown
You-Get - Command-line utility to download media contents from the web
Markdium - Write Medium post in Markdown without pain.
YouTubeDLD - World's most efficient YouTube downloader. No spam or ads.
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.