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.

mention - Media monitoring made easy with Mention. Create alerts on your name, brand, competitors and be informed in real-time of any mention on the web and social networks

Synonymful - Improve your vocabulary and communicate like a pro.

Google Alerts - Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news...

Fluent - Fluent is a people-based marketing platform that uses real-time, one-to-one interaction to create custom audiences and serve personalized ads that drive performance at scale.

KUKU - KUKU.io is a powerful social media marketing and analytics platform.