The licenses for the components contained in the MindFusion JavaScript Pack are perpetual and royalty-free. There are no separate trial / licensed builds of MindFusion scripts provided, instead you disable trial mode by specifying a license key string. When you purchase the component, you can find its license key string listed on the Keys & Downloads page at the customer's portal. Copy the key to a mindfusion_lic.txt file in same folder where the html page where the component(s) is used is located. The file name and location can be changed by setting the static licenseLocation property of Control class. Alternatively, the key string can be set directly by setting the licenseKey property of components.