PsychoPy is an free cross-platform package allowing you run a wide range of in the behavioral sciences (neuroscience, psychology, psychophysics, linguistics...)
This is a community project. Users have all the source code. Users are the developers. Users support each other.
Alongside open-source, we're strongly supporters of Open Science, and we'll try to encourage and facilitate that wherever we can!
Universities all over the world are using PsychoPy for teaching students about experiments
Hardware accelerated graphics, best-in class timing, and calibration tools built in
Want to run your study on the web, so users can access it anywhere?
PsychoPy3 added the facility to run studies online using a high-performance, hardware-accelerated, port of the PsychoPy Python library.
Did you notice that everyone's sharing these days?