Graphical experiment builder for the social sciences
TypeScript Python Other
Latest commit b121a88 Aug 11, 2016 @smathot Bump to 3.1.2
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dev-scripts Further updates to translation framework Feb 9, 2016
libopensesame Bump to 3.1.2 Aug 11, 2016
libqtopensesame font widget: use correct pixel size in preview Aug 10, 2016
mime icon: add border to opensesame svg icon May 1, 2016
openexp api: add font_size to canvas api docs Jul 30, 2016
opensesame_extensions Fixed suppression of same notification within certain interval Jul 16, 2016
opensesame_plugins variables: clear variable store when resetting items Jul 30, 2016
opensesame_resources translations: recompile qm files Aug 2, 2016
opensesame_unittest translations: add punctuation and whitespace checks to unittest Aug 2, 2016
.gitattributes Updated to 0.23 Mar 26, 2011
.travis.yml travis: update Mar 29, 2016
COPYING Add correct COPYING Dec 8, 2012 Update setup for stdeb Mar 27, 2016
copyright Update setup for stdeb Mar 27, 2016
opensesame Even better setup of main file Apr 6, 2016
opensesame.nsi Update Windows installer script for 3.1 Jul 12, 2016 Cosmetical enhancements Apr 18, 2016
opensesamerun setup: use entry-point like structure. Mar 25, 2016
qt.conf Changes to work with py2app Mar 25, 2013 Update master readme for James Feb 7, 2016 travis: add unittests script Oct 3, 2015 android: minor fixes Sep 28, 2015
setup-mac-nodeappdmg.json Update Mac OS build scripts for 3.0.7 Mar 16, 2016 Fixes to notifications, resource localization and setup script Jul 7, 2016
setup.cfg Update setup Mar 25, 2016 setup: make setup Ubuntu friendly Jul 12, 2016 setup: add analytics as standard extension Jun 24, 2016
stdeb.cfg update setup Apr 25, 2016 translations: skip build folders in translation-update script Jun 30, 2016


OpenSesame is a tool to create experiments for psychology, neuroscience, and experimental economics.

Copyright, 2010-2016, Sebastiaan Mathôt and contributors.

Build Status


  • A comprehensive graphical user interface--flexible and easy-to-use
  • Support for Python scripting--add the power of Python to your experiment
  • Support for external devices--use your eye tracker, button box, EEG equipment, etc.
  • Free and open source--released under the GPL3
  • Crossplatform--runs on Windows, Mac OS, Linux, and Android (runtime only)


Each major version of OpenSesame lives in its own branch. The master branch contains the latest stable version.

  • gibson - 2.8
  • heisenberg - 2.9
  • ising - 3.0
  • james - 3.1


OpenSesame is a graphical experiment builder. OpenSesame provides an easy to use, point-and-click interface for creating psychological/ neuroscientific experiments.


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


If you wish to contribute to OpenSesame (and you are welcome to!), please visit:


OpenSesame is distributed under the terms of the GNU General Public License 3. The full license should be included in the file COPYING, or can be obtained from:

OpenSesame contains works of others. For the full license information, please refer to debian/copyright.


Installation instructions and documentation are available on the documentation website ...

... which is itself also hosted on GitHub: