Courseroot - Biggest online course database on the web
Eduflow - Digital learning that actually teaches students something
Alcamy - Free, open self-learning platform. Learn & teach anything.
Flowlingo - Get fluent in a language through content immersion
CurrencyStack - A free modern currency data API for fintech apps.
Backchannel Chat - Backchannel Chat is best in class discussion tool that is intended for teachers to streamline their class activities.