YouTube Kids - YouTube for the youngins on iOS and Android
Kisi - Cloud-managed keyless access for the office
Interland by Google - A game to help kids be safe, confident explorers online
doorbot - The Wi-Fi enabled doorbell for smartphones
TisaneAPI - Detect hate speech, cyberbullying, and more in 27 languages
Nold - Nold offers a smartphone based access control system for both personal and business use.