Camera Mouse is a free program that allows you to control the mouse pointer on a Windows computer just by moving your head. Clicking can be done by making the mouse pointer dwell over a spot on the screen (after first turning Clicking on in Settings).
The program was developed at Boston College to help people with disabilities use the computer. The main audience for this program is people who do not have reliable control of a hand but who can move their head. People with Cerebral Palsy, Spinal Muscular Atrophy, ALS, Multiple Sclerosis, Traumatic Brain Injury, various neurological disorders use this program and its predecessors to run all types of computer software.