Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Backchannel Chat - Backchannel Chat is best in class discussion tool that is intended for teachers to streamline their class activities.
Event Hunt - Startups and Tech Events Curated By Locals
Eduflow - Digital learning that actually teaches students something
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Flowlingo - Get fluent in a language through content immersion