Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Drops - Visual language learning.
Yozzi.com - Want to practice your writing skills in English? You can submit articles to Yozzi and receive feedback from native speakers. Yozzi welcomes guest interviews and guest posts, especially about language, culture, business and startups.
Vocabulary Miner - Flashcard app with offline learning, spaced repetition, no ads, export & import, statistics...
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
Lingualia - Learn Languages Online. Lingualia is a revolutionary new way to learn languages which learns from you and adapts the course to your needs. Discover a personalised language learning experience.