TisaneAPI - Detect hate speech, cyberbullying, and more in 27 languages

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.

Kidy - Intelligent, safe search for kids

COOLPHABETS - Helping kids around the world learn their native alphabets.

Interland by Google - A game to help kids be safe, confident explorers online

Fun Learn - Games and Education & Reference