Despite its popularity, Psychtoolbox-3 currently doesn’t receive any funding for its ongoing development and maintenance. Moreover, since June 2013, Mario Kleiner, the main developer and maintainer of Psychtoolbox-3, works full time on Psychtoolbox without any financial or other compensation, essentially treating Psychtoolbox ongoing development and future-proofing as a very time consuming and expensive “hobby”.
If you want to show some gratitude for the work done and help to keep Psychtoolbox-3 development sustainable, please consider donating some money.
The most simple way to donate is via PayPal:
Thank you for your support!