Alcamy - Free, open self-learning platform. Learn & teach anything.
Traverse - Barcoding solution for small to midsize businesses
Stacks - A bookshelf for your online courses
WarmMachine - Your personal knowledge manager
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!
Tradeskills - Learn trade skills online.