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Everyone loves the sound of this, if you don’t include Rosetta Stone in “everyone.”
Duolingo, the company and free application that teaches people languages through game-like activities, announced on Tuesday that it raised $20 million in a funding round led by the Silicon Valley venture capital firm Kleiner Perkins Caufield & Byers.
The service, which launched in 2012, is now used by 20 million people, 10 million of which are active. Co-founder and chief executive Luis von Ahn — who teaches computer science at Carnegie Mellon University and also happened to co-invent the reCAPTCHA anti-bot tool — said there is one goal for Duolingo: To provide free language education to virtually everyone.