Galaxia - Mini social networks for all your personas
Typora - A minimal Markdown reading & writing app.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
Dillinger - joemccann has 95 repositories available. Follow their code on GitHub.
Caret - Better Markdown Editor for Mac / Windows / Linux
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.