Hello, there are many services that offer cash register software for online cash registers. As a rule, the program should support basic cash transactions. Therefore, when choosing a cash register software, it is necessary to proceed from the specific needs of this type of business, and not look for a familiar name. As an option, I can recommend you a white label payment platform (https://payadmit.com/saas/), this is a profitable and secure payment solution for small and medium-sized businesses.