Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
Eduflow - Digital learning that actually teaches students something
thinkific - Create online courses and membership sites with Thinkific and feel confident that you’ve got the easiest technology and the best support in the industry.
Kialo - Kialo is the platform for rational debate. Empowering reason through friendly and open discussions.
Backchannel Chat - Backchannel Chat is best in class discussion tool that is intended for teachers to streamline their class activities.