Airschool - Airschool is a live-streaming educational platform with engagement and monetization tools to help anyone start teaching online. It can be finance, business, wellness, meditation, branding, marketing; in short, anything you want!
Upcase by thoughtbot - An online learning platform for developers - now free
Alcamy - Free, open self-learning platform. Learn & teach anything.
PracticeLinux - Learn Linux, Vim, Git, Tmux, Gpg and more
Stacks - A bookshelf for your online courses
Enbitious - An online business learning marketplace that helps all ambitious entrepreneurs to learn & network.