Abstract: Systems and methods are disclosed for processing information related to appointment systems as well as associated terminal operating systems and other related systems. According to one illustrative implementation, an exemplary method for processing information involving appointment systems herein may include receiving/handling/processing data in a TOS format associated with a TOS type, converting the data into a TOS agnostic format, and performing processing using the TOS agnostic data. In another exemplary implementation, there is provided computer-implemented methods for processing information for appointment systems in conjunction with associated systems and operations. Systems and computer-implemented methods herein may include or involve processing information related to an appointment system and interrelationships with associated terminal operating systems, gate systems, and/or various TOS-agnostic features and functionality.