Typora - A minimal Markdown reading & writing app.
Zen Planner - Zen Planner's fitness membership management software helps you grow your box, gym or studio with scheduling, automated billing & more. Try it now for free!
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Glofox - Powerful Gym and Studio Management Software.
Dillinger - joemccann has 95 repositories available. Follow their code on GitHub.
Pike13 - Pike13 provides a mobile-first solution for "on-the-go" owners of small service business who are trapped in a paper world trying to manage their clients.