Duolingo is available for iOS, Android and Windows phones. With 80 million users, it has become one of the world’s most popular language-learning platforms in just two years. The site offers free courses in Spanish, French, German, Portuguese and Italian for English-speakers and in English for Spanish, French, German, Portuguese, Italian, Dutch, Russian, Polish, Turkish, Hungarian, Rumanian, Japanese, Hindi and Indonesian speakers. Duolingo turns language learning almost into a game with scores, ratings and lives, like in videogames. Just like in a videogame, you lose points if you make a mistake, you have to race against the clock and you increase your level. Lessons are organised in small blocks. Once you’ve finished a session, you can move on to the next one or go back to work on your weaknesses with new exercises.