Welcome to the OpenSesame documentation area! Here you can find everything you always wanted to know about your favorite free and cross-platform experiment builder. The latest stable version of OpenSesame is 0.27.4 Frisky Freud, released on September 13 2013 (release notes). If you are upgrading from 0.26, please read the 0.27 release notes.
To cite OpenSesame in your work, please use the following reference:
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