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.

LeadRocks - Unrivalled in retrieving emails and contact information. Ease-of-export, decent worldwide coverage. Quality of ongoing product support & advantageous pricing.

Synonymful - Improve your vocabulary and communicate like a pro.

Sweego.io - Send all your notifications (email, SMS, slack, chat…) and make sure that they’re delivered. Create, send and monitor easily with Sweego for developers.

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.

nnn - Fast and resource-sensitive file manager for the terminal