Abstract: The system developed intends to provide car-sharing operators with a management system for their operations that is at the same time highly functional but very flexible and easy to use. At the same time, such software is used by the requesting company for the management, control and optimization of the resulting network of providers. Such network arises from using this software to have multiple operators allowing roaming of their clients and assets thus creating a seamless network of vehicles to be used by all clients irrespective of which operator they have contracted the service. The system comprises a plurality of interfaces, of which at least one for each of the vehicle fleet operator systems; a fleet tracking module; a zone management module; a multivariate vehicle supply and demand forecasting module; a reservations module, able to take into account the difference between forecasted supply and forecasted demand namely for non-firm reservations.