TisaneAPI - Detect hate speech, cyberbullying, and more in 27 languages
Four Seconds - A timer and a simple rule: stop it at exactly four seconds.
YouTube Kids - YouTube for the youngins on iOS and Android
Wikids - An encyclopedia that talks to your kids
KidsWifi - Simply plug in to protect your kids online
ScreenTime for Starry Station - Keeping kids safer online in a few simple taps.