TryCode - Realtime collaborative code editor (beta)
Udemy - Online Courses - Learn Anything, On Your Schedule
Codefile - Create collaborative code files & share it in real time
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
CodeShare.io - Realtime code sharing for developers
Adobe Captivate Prime LMS - Adobe Captivate Prime LMS is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.