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free language-learning platform
|Instance of|| Gamification of learning,|
Crowdsourcing as Human-Machine Translation (19 January 2017),
Esperanto learning tool,
|Location||United States of America|
|Founded by|| |
|Platform||iOS, Android, Windows Phone|
English: Duolingo is a free application and web site for language learning and translation.
Media in category "Duolingo"
The following 6 files are in this category, out of 6 total.