GazeRecorder is eye tracking software that basically tracks your eye movements and your gaze on the computer screen. It basically calibrates your eye movements and face so it can learn where the eye moves on the screen. It employs complex tracking algorithms to track eyes and even works when your face is partially obstructed.
You do not need any specialized hardware for using this. All you need is a PC and a webcam. There will be no physical contact involved and the eye movement will be mapped in real-time.
This application also creates a heat map of your gaze on the screen. This is done by recording the aggregated gaze over your screen. Apart from recording a heatmap, this free eye tracking software also records the calibration info and the whole sample of eye movement in text files. You can also check out a less sophisticated camera mouse here.
This gaze tracking software is really helpful if one wants to learn of human eye movement habits on the screen. As a demo, it can only record for 60 seconds which is enough for a normal study. One use case I can think of is to see if your website layout is user friendly. Just open your website and let a user look over it. This software will track the gaze of the user, and you will instantly know which areas of your website are getting the most attention. Those places will obviously be most suited to put call to action buttons.
||Free to try
Windows Server 2008