An airline reservation system, commonly referred to as ARS, serves as an online platform enabling users to search for and purchase flight tickets, and we also provide a compatible Android application for ARS. The hotel extranet, or hotel CRS, functions as an online hotel reservation system that consolidates local inventory through a manager's module or via external channels. Among the various global distribution systems, Amadeus GDS is highly favored, offering an array of travel deals on flights, hotels, transfers, sightseeing, and cruises to travel management firms. The Galileo GDS system, offered by TravelPort, is recognized as one of the most advanced GDS platforms utilized by travel agents, aggregators, and hospitality businesses alike. Additionally, the demand for car rental software has significantly increased in recent years, fueled by leading mobility solutions, enhanced internet speeds, and widespread user adoption. Furthermore, the bus reservation system features an online bus booking software equipped with a user-friendly seat selection module, which is also accessible through mobile applications for both Android and iOS devices, ensuring convenience for travelers. Overall, the evolution of these systems reflects the growing reliance on technology within the travel industry.