We describe a lightweight application sharing infrastructure that enables collaborative design using graphics intensive applications over low bandwidth networks. The basis of the technology employs an event driven-mechanism to share a reduced event set among multiple copies of an application executing on different workstations. This technology is referred as RES-AP (Reduced Event Set Application Sharing). RES-AP allows geographically-dispersed engineers to work together on large complex problems with fast responses. This capability is achieved without modification to the applications or to the window system software.