RResearchAlts

PsychoPy

Build behavioural experiments with a GUI or Python

★ Stars2.1k2,097 on GitHub
Last commit16 Oct 2026
LicenceGPL-3.0SPDX, from the repository
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From GitHub, fetched 19 Oct 2026.

Visit psychopy.org ↗

PsychoPy creates psychology and neuroscience experiments with precise timing, using either a visual Builder or Python code. Experiments can run in the lab or online via Pavlovia.

Who it suits

  • Teaching and experiment labs: its site says researchers use it “for teaching students about experiments”, with a Builder interface for creating studies and textbooks “suitable for both undergraduate and professional audiences”.

From psychopy.org, checked 19 Oct 2026. Quotes are the project's own words.

Free alternative to

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