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.
Lingvist - Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
Easy Ten - Learn any language with ten words a day.
WexLang - Learn a language by reading whatever you like
LONY - Practice languages with native speakers around the world