Full-suite language courses + social learning
Busuu offers lessons that focus on speaking, writing, reading and listening skills and the opportunity to meet language partners.
PROS: Users can share exercises with the community to receive feedback from native speakers. Targeted courses include business skills, travel skills and pronunciation practice. You can take level tests and earn certificates.
CONS: You’ll have to purchase the activities without trying them first. Sometimes the language used in the activities is unnatural. The certification tests are too easy and not a good measure of ability.
Disclaimer: I received a free premium 6 month membership to Busuu