Proprietary language learning software

Duolingo, Inc. is an American educational technology company that produces learning apps and provides language certification. Duolingo offers courses on 42 languages, ranging from English, French, and Spanish to less commonly studied languages such as Welsh, Irish, and Navajo, and even constructed languages such as Esperanto and Klingon. It also offers courses on music, math, and chess. The learning method incorporates gamification to motivate users with points, rewards and interactive lessons featuring spaced repetition. The app promotes short, daily lessons for consistent, phased practice.

Memrise is a British language platform that uses spaced repetition of flashcards to increase the rate of learning. It is based in London, UK.

Busuu is a language learning platform on web, Windows iOS and Android that allows users to interact with native speakers. In 2021, Chegg acquired Busuu for $436 million.

proprietary software for learning foreign languages and writing systems

Babbel GmbH, operating as Babbel, is a German company operating a subscription-based language learning software and e-learning platform.

language exchange app

Mondly is a language learning company that operates a website and a number of free and paid language apps. The company was acquired in May 2022 by the British educational giant Pearson.

video game series