WebGazer.js - Eye tracking on the browser
Umoove - Face and eye tracking for mobile devices/gaming
FOVE - An eye tracking virtual reality headset (pre-launch)
Eye Yoga - Improve eyesight, relieve eye strain and prevent presbyopia.
Teslasuit - The worlds 1st full body haptics suit that lets you feel VR
Jabberwocky - Communicate through text to speech by moving your head