SPIN Safe Browser - SPIN Safe Browser is a free web filter that blocks porn and inappropriate content to provide a safe internet surfing experience for kids.

WebGazer.js - Eye tracking on the browser

Boomerang Parental Control - Boomerang Parental Control helps parents start conversations with their children's technology use: App Controls, Text Monitoring, Time Limits and more.

FOVE - An eye tracking virtual reality headset (pre-launch)

Qustodio - Free parental control software. Monitor and track your child's online activity. Block dangerous sites and protect kids from online bullying.

Breaks For Eyes - A Mac app to get rid of eye strain, dry eyes and fatigue