OCCT's licensing model is straightforward: Personal users need one license per household and Pro/Enterprise users need one license per platform (Windows/Linux) for their whole company. There is no limit on the number of concurrent instances or the number of computers you can test (although number of cloud uploads depend on your license type). Please note though that sharing or redistributing your license outside of your household or company is strictly prohibited.
We are continuously working on new features and improvements for both the Personal and Professional editions. Stay updated and join the discussion on our Discord server, or check the news section on this website for major updates. If you have a feature request or suggestion, don't hesitate to share it with us. We're always eager to hear from our users and make OCCT even better.