GNU General Public License (GPL) Yes NITRC PsychoPy FreeBSD, MacOS, Linux, Windows 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, Beta, FreeBSD, GNU General Public License (GPL), Experimental Control, Python, Developers, End Users, MacOS, Linux, Windows http://www.nitrc.org/projects/psychopy/, http://www.psychopy.org