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.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
Clever - syncing between education applications for K-12 schools
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Claroline - Claroline is a collaborative eLearning and eWorking platform.