If you have decided to contribute (many thanks!), but you'd like to give to ArgyllCMS directly on your own behalf (visit argyllcms.com and scroll down a bit to get to its contribution links), please leave a message on your DisplayCAL contribution if contributing to both projects. Please note that if your contribution should be put towards adding a certain feature in ArgyllCMS, like support for a specific instrument, it will be more appropriate and efficient to contribute to ArgyllCMS only, and directly.