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OpenSesame is a program to create experiments for psychology, neuroscience, and experimental economics. The latest stable version is 3.1.6 Jazzy James, released on February 7, 2017 (release notes).


  • A user-friendly interface — flexible yet easy-to-use
  • Python — add the power of Python to your experiment
  • Use your devices — use your eye tracker, button box, EEG equipment, and more.
  • Free — released under the GPL3
  • Crossplatform — Windows, Mac OS, Linux, and Android (runtime only)


  • Mathôt, S., Schreij, D., & Theeuwes, J. (2012). OpenSesame: An open-source, graphical experiment builder for the social sciences. Behavior Research Methods, 44(2), 314-324. doi:10.3758/s13428-011-0168-7
Video 1. The step-by-step video tutorial shows how to create a complete experiment from scratch.
Video 2. A shorter, slightly more advanced tutorial showing how to implement a visual-search experiment.