buckets.co - Feature rich kanban board collaboration platform.

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.

TaskBoard - A Kanban-inspired app for keeping track of things that need to get done.

Eduflow - Digital learning that actually teaches students something

Pintask - Pintask is the most customizable Kanban board.

Kialo - Kialo is the platform for rational debate. Empowering reason through friendly and open discussions.