Scientists, making better open tools, for scientists.


PsychoPy is one of the most popular open-source packages for running experiments in psychology, neuroscience and related behavioral sciences. Built to be:

  1. Precise enough for psychophysics
  2. Easy enough for teaching
  3. Flexible enough for everything else


PsychoJS is the JavaScript port of the PsychoPy library. The idea behind PsychoJS is to make PsychoPy experiments available online, from a web page, so participants can run them on any device equipped with a web browser such as desktops, laptops, or tablets.

Pavlovia is like:

  • Open Science Framework, except built with Git version control
  • GitHub for psychologists, except other psychologists will find your work
  • An experiment server, allowing you to run your study. Actually, it isn't a bit like that. It is exactly that!