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About PsychoPy

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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’s a free, powerful alternative to Presentation™ or e-Prime™, written in Python (a free alternative to Matlab™ ).


Latest version: 1.84.1 was released Sept 2016. See the full Changelog with new Projects menu for syncing with Also various bug fixes and updated standalone packages

We’ve got a new forum: To discuss anything PsychoPy (features, bugs, tips or announcements) go to the new PsychoPy forum Many thanks to the good people at for creating such lovely software and hosting it for us!