We do. You can purchase a footer link removal license, which gives you the right to remove Kayako branding completely. Buying this one time service means you can take off Kayako branding from your Support Center, Staff Control Panel, and Admin Control Panel.
Once you purchase the footer link removal package, you will be able to remove the "Copyright" and "Powered by" notices, as well as completely rebranding your support site. This license will be valid for lifetime.
For any queries, feel free to contact the Sales department via email (firstname.lastname@example.org), live chat or phone.