The EyeHarp is a free, open source software. The main goal of the project, is to allow people with paralysis resulting from Amyotrophic Lateral Sclerosis to play music using only their eyes. Alternatively, the instrument can be controlled using the mouse pointer (MouseHarp version). Then the free software camera mouse can be used to control the instrument with head movements. Any technology that can take control of the mouse pointer can be used in order to control the instrument.
The software has been developed by Zacharias Vamvakousis as part of his master thesis. Find more information here.