This article provides a quick overview on Streamezzo Rich Media Client, a software packaged altogether with a Rich Media Application and installed on a device for rendering easy-to-maintain, easy-to-upgrade and cross-platform Rich Media Applications. Rich Media Client is smartly declined for all device platforms; as such it benefits from fine integration with devices, offering optimal performances and tight interoperability. After reading this article you should know the main concepts of Rich Media Client and you should become more familiar with the set of features that are in operation within the Streamezzo runtime.