JATOS is free and open source. To support scientists during Covid-19 moving their lab experiments to its online counterpart a JATOS server for everyone free to use was set up. It cost a bit to rent the server. So please buy me a coffee.
Thank you so much for providing this free service. It is a lifesaver.
Thank you so much for providing the server for researchers to run experiments when it is not possible in the lab. This has been a life saver.
Many thanks to Kristian with his support! :X