|Founder(s)||Luis von Ahn, Severin Hacker|
|CEO||Luis von Ahn|
|Industry||Online education, Professional certification, Translation, Crowdsourcing|
|Services||Language courses, Duolingo Test Center, Duolingo for Schools|
|Slogan(s)||Free language education for the world|
|Alexa rank||869 (January 2017[update])|
Duolingo is a free language-learning program. Its website and mobile apps are available to anyone with an Internet connection plus a computer, tablet or smartphone. Duolingo can be used on iOS, Android, Windows 8 and 10 operating systems. Duolingo allows people to learn over 50 different language courses in 23 languages. There are over 100 million people learning a language on Duolingo.
References[change | change source]
- "Duolingo". Ranking. Alexa Internet. Retrieved 23 January 2017.
- Jill Duffy (6 August 2015). "Duolingo". PC Magazine. Retrieved 21 December 2015.
- Shane Hickey (8 March 2015). "Learning the Duolingo – how one app speaks volumes for language learning". The Guardian. Retrieved 21 December 2015.
- "100M users strong, Duolingo raises $45M led by Google at a $470M valuation to grow language-learning platform". Venture beat. Retrieved 2015-06-21.
- "Duolingo – Learn Languages for Free". Windows phone. Microsoft. Retrieved 2014-11-21.
- Lorena Waters (17 December 2015). "Duolingo: Making Money By Offering Free Language Lessons". Recorder Journal. Retrieved 21 December 2015.