Babbel - Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
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.
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
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.
Rosetta Stone - Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.
Pimsleur - Pimsleur is another language learning platform that allows you to learn a language in fun way.