Umoove - Face and eye tracking for mobile devices/gaming
Zukitwo - Zukitwo is a Gnome Shell and GTK theme that currently works on Gnome Shell 3.14 and the latest version of GTK.
WebGazer.js - Eye tracking on the browser
Dark Language - Holistic language, editor, and infra for building backends
FOVE - An eye tracking virtual reality headset (pre-launch)
adapta-gtk-theme - An adaptive Gtk+ theme based on Material Design Guidelines - adapta-project/adapta-gtk-theme