Courseroot - Biggest online course database on the web
Adhoc School - A community-based marketplace for K12 after school activities & activities.
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!
Gooroo - Tutoring subscription featuring personalized matching
Alcamy - Free, open self-learning platform. Learn & teach anything.
Programming Hero - Personalized, fun, and interactive way to learn programming