Udemy - Online Courses - Learn Anything, On Your Schedule
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
Adobe Learning Manager - Adobe Learning Manager (formerly Adobe Captivate Prime LMS) is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
Frost - An open API for Blockchain timestamping
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
iA Writer - Minimal Design, Maximum Focus