FOVE - An eye tracking virtual reality headset (pre-launch)
f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.
WebGazer.js - Eye tracking on the browser
Darkness: Beautiful Dark Themes - Chrome extension that provides beautiful dark themes for Facebook, Google and more.
Breaks For Eyes - A Mac app to get rid of eye strain, dry eyes and fatigue
Dark Reader - Reduce eye strain in your browser with this extension that provides a dark theme for browsing.