Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
iA Writer - Minimal Design, Maximum Focus
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
MWeb - Pro Markdown writing, note taking and static blog generator