CS183B - Startup Class - Stanford class taught by Sam Altman & guest speakers
Courseroot - Biggest online course database on the web
Classroomies - Watch Stanford CS & Startup lectures together
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!
Frond - A better way to build community online
Alcamy - Free, open self-learning platform. Learn & teach anything.