Eye movement tracking with webcam for heat maps and gaze-based control
Webcam Eye Tracking Software to Record Eye Movement: GazeRecorder
Online Research Platform with Webcam Eye-Tracking | RealEye.io
If you're using Eyeware Beam: 60FPS+ webcam eye tracking was made available for Star Citizen with the latest release, if your webcam supports higher frame rates (e.g. Logitech Brio, Elgato Facecam, ...).