Google Open Source - All of Googles open source projects under a single umbrella
TisaneAPI - Detect hate speech, cyberbullying, and more in 27 languages
Open Source @IFTTT - A collection of IFTTT OSS projects.
YouTube Kids - YouTube for the youngins on iOS and Android
Code NASA - 253 NASA open source software projects
Interland by Google - A game to help kids be safe, confident explorers online