From Usoris Systems:
Remote Utilities Server (formerly Gateway Mediation Server) is a free program that runs locally on your premises and provides remote access mediation service. RU Server works with Remote Utilities remote desktop software. The program consists of a service and Administrator's console. The service is run on the gateway PC while the Administrator's console is used to connect to server and administer it. RU Server allows remote support companies and helpdesk providers to have fully independent remote support solution where all connections go through the server that they control. Also, RU Server allows helpdesks to share their connection list (address book) easily using RU Server's built-in sync capabilities.