Alcamy - Free, open self-learning platform. Learn & teach anything.

Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.

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!

QuizClash - In QuizClash, you can challenge your friends or random opponents to a game of trivia.

Stacks - A bookshelf for your online courses

QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.