Duolingo is a freemium language-learning platform that includes a language-learning website and app.

Playir is a mobile app and game creation platform, that allows you to create your own games and apps from pre-made templates.

Cram is an online platform to create and share online flashcards.

Babbel is a subscription-based language learning app and e-learning platform.

AnkiApp is a flashcard app for iOS (iPhone + iPad), MacOS, and Android.

Busuu is a social network for learning languages.

VocApp.com is a vocabulary improvement software platform.