YOU app - Gently nudges people into healthier daily habits
Typora - A minimal Markdown reading & writing app.
Meports - Data driven self improvement app
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
Genomelink - A cutting edge learning tool for your DNA
MarkText.app - Mark Text is a Markdown editor for Mac, Windows and Linux.