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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.
Open Syllabus Project - The largest databases of college course syllabi in the world
Clozemaster - Learn a language through mass exposure to useful vocabulary in context.
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Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .