Here you can download the Quokka3-client software, which is bundled with a free (restricted) Quokka3-core executable. It is currently available for Windows (7, 8 and 10) only.
To access the full version, an additional license including cloud-access is required, see License options.
Disclaimer: Quokka3-client and the bundled Quokka3-core executable are distributed for free. The software is licensed for non-commercial use only, without any expressed or implied warranty for the usefulness or correctness of the results rendered by this software. Download and use at your own risk.
An all-new version 2 is in beta status. You are welcome to learn about it and download it here: version 2 beta overview