Umoove - Face and eye tracking for mobile devices/gaming
Oculus Quest - An all-in-one VR system
WebGazer.js - Eye tracking on the browser
Microsoft Hololens - Augmented reality headset from Microsoft
FOVE - An eye tracking virtual reality headset (pre-launch)
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.