Open fleets offer a dynamic environment where the fleet is continually rebuilt ad-hoc since vehicles can enter or leave the fleet anytime, and the only immutable entity is the item to be delivered. Therefore, we need to be able to define a changeable delivery plan capable of adapting to such a dynamic environment. Hence, we propose Open Fleet Management, a Self-Management platform capable of optimizing plan delivery dynamically. The platform utilizes information about location, routes, delivery in transit and delivery costs to change the shipment plan according to the available carrier. Therefore, if two carriers are doing a shipment service to the same place, the platform will be able to discover such a situation and put them in contact to optimize the efficiency of the shipment.