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.

Revive - A free tool to find content decay and help win back traffic

Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.

Traffic1M - Free lessons from the pros who’ve built massive websites

Lingvist - Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.

Stencil - Stencil is a the fastest and simplest way to design images and graphics for digital marketing.