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.

NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.

Drops - Visual language learning.

ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.

Clozemaster - Learn a language through mass exposure to useful vocabulary in context.

iSpring QuizMaker - iSpring Quiz Maker is easy-to-use quiz software. Create interactive quizzes and surveys in HTML5 & Flash and embed them in a website or publish for any LMS!