Typora - A minimal Markdown reading & writing app.
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Dillinger - joemccann has 95 repositories available. Follow their code on GitHub.
Jour - Jour is a mindful, interactive journal that can guide you toward feeling calmer, happier, and more present.
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
Mini Diary - Simple and secure journal app