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.

GetYourGuide - Get tickets to the most popular attractions while travelling

LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary

Klook - Discover & book amazing experiences at exclusive prices

Babble - A more personalized social network

Airbnb - Book unique places to stay and things to do.