—In this paper we present the European project named E-Support, aimed to the maintenance companies which work on the field, away from the central headquarters. The main goal of E-Support is to help the field engineers and technicians to access the knowledge base of the company. They will connect to remote servers by using mobile devices in order to get information about vendors, customers, plants, parts and download technical documents. The whole system will be implemented by a multi-agent platform running agents on mobile devices and server agents that provide the services. A particular emphasis will be placed on the contribution of D’Appolonia regarding the document retrieval system.