camera mouse is described as 'Camera Mouse is a free program that enables you to control the mouse pointer on your computer screen just by moving your head'. There are four alternatives to camera mouse for Windows, Linux and Mac. The best alternative is Enable Viacam, which is both free and Open Source. Other great apps like camera mouse are OpenGazer (Free, Open Source), GiMeSpace Cam Control (Free) and EagleEyes (Free).
Enable Viacam (aka eViacam) is an open source mouse replacement software that moves the pointer as you move your head. It works on standard PCs equipped with a web camera. No additional hardware is required. Based on the award winning Facial Mouse software.
EagleEyes is a technology that allows the user to move the cursor on the screen of a Windows computer by moving his or her eyes or head. Basically, the cursor follows the location that the user is looking at on the screen. The eyes replace the mouse.