From Simple English Wikipedia, the free encyclopedia
HeadquartersPittsburgh, Pennsylvania
Founder(s)Luis von Ahn, Severin Hacker
CEOLuis von Ahn
IndustryOnline education, Professional certification, Translation, Crowdsourcing
ServicesLanguage courses, Duolingo Test Center, Duolingo for Schools
Slogan(s)Free language education for the world
Alexa rankPositive decrease 869 (January 2017)[1]
Available in
  • English (American Voice)
  • Latin American Spanish
  • French
  • Brazilian Portuguese
  • Italian
  • Dutch
  • German
  • Polish
  • Romanian
  • Russian
  • Turkish
  • Hungarian
  • Japanese
  • Chinese (Mandarin)
  • Hindi
  • Indonesian
  • Greek
  • Modern Standard Arabic
  • Korean
  • Vietnamese
  • Ukrainian
  • Czech
Current statusOnline

Duolingo is a free language-learning program.[2] Its website and mobile apps are available to anyone with an internet connection plus a computer, tablet or smartphone.[3] Duolingo can be used on iOS, Android, Windows 8 and 10 operating systems. Duolingo allows people to learn over 106 different language courses in 40 languages. There are over 500 million people learning a language on Duolingo.[4][5]

History[change | change source]

The project was started by Professor Luis von Ahn and graduate student Severin Hacker. The main development language used was Python.

References[change | change source]

  1. "Duolingo". Ranking. Alexa Internet. Archived from the original on 9 January 2019. Retrieved 23 January 2017.
  2. Jill Duffy (6 August 2015). "Duolingo". PC Magazine. Retrieved 21 December 2015.
  3. Shane Hickey (8 March 2015). "Learning the Duolingo – how one app speaks volumes for language learning". The Guardian. Retrieved 21 December 2015.
  4. "100M users strong, Duolingo raises $45M led by Google at a $470M valuation to grow language-learning platform". Venture beat. Retrieved 2015-06-21.
  5. "Duolingo – Learn Languages for Free". Windows phone. Microsoft. Retrieved 2014-11-21.

Other websites[change | change source]