@[deleted]: Correct me please if I am wrong here!If I am correct, osticket is under GNU GPL Version 2:https://github.com/osTicket/osTicket-1.8/blob/develop/LICENSE.txtGNU GPL in Version 2 allows you to modify osTicket and sell/distribute it as long as you make the modified source available to others (your customers, etc.) - see these links here:https://www.gnu.org/licenses/old-licenses/gpl-2.0-faq.html#GPLCommerciallyhttps://www.gnu.org/licenses/old-licenses/gpl-2.0-faq.html#DoesTheGPLAllowMoney