Free
Duolingo
Duolingo for Windows: desktop practice for steady language progress
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A free Science & education program for Windows
Qualitative analysis software for video and audio data
Teaching aid for kids about the Third Reich
A free program for Windows, by Discovery Communications.
German language course for foreigners
Complete English dictionary of synonyms
Easily create music your way
Learn Morse code with these lessons
Practice and test yourself in a variety of languages
Educational Tool for Gene Analysis
Comprehensive Verb Conjugation Tool