Woopm is a IM platform which provide Open API for iOS/Android developers, itself also is application which provide IM service. The server side base on J2EE(Spring/Hibernate/NoSql Cache/Apache Load Balance/Netty/JGroup etc) and can support many server to implements load balance. We already done iOS/Android client version and support text/video/audio chat, buddy list, synchronize contracts, offline message, Push etc.
