GNU General Public License (GPL) Yes NITRC PsychoPy FreeBSD, Linux, MacOS, Windows Yes Python PsychoPy - Psychology software in Python. PsychoPy is an open-source application to allow the presentation of stimuli and collection of data for a wide range of neuroscience, psychology and psychophysics experiments. It is intended as a free, powerful alternative to Presentation or e-Prime. PsychoPy Console (Text Based), Win32 (MS Windows), English, 4 - Beta, Python, MR, End Users, Developers, MacOS, Windows, Linux, FreeBSD, Experimental Control, GNU General Public License (GPL), Autistic Disorder, Depression, Schizophrenia, Dyslexia, Parkinson Disease, Brain Injuries, Child Development Disorders, Pervasive, Stroke, Attention Deficit Disorder with Hyperactivity, Alzheimer Disease, Obsessive-Compulsive Disorder, Tourette Syndrome, Brain Concussion, Agnosia, Diabetes Mellitus, Bipolar Disorder, Substance-Related Disorders http://www.nitrc.org/projects/psychopy/, http://www.psychopy.org