Abstract—As the World Wide Web has succeed in distributed information publication system which is an unidirectional communication system , there is an increasing demand for other network services, such as real-time data feeds, group communication and teleconferencing, which requires a full-duplex connection between client and server. Ajax and Comet has been introduced to archive such real-time requirements on the web, which have several limitations such as poor performance and high resource consumption [1]. This paper proposes a real-time group communication software architecture called Komm based on WebSocket, which represents the next evolutionary step in web communication compared to Comet and Ajax. Comparing with Comet and Ajax implementation, Komm shows better usability, higher performance and lower resource consumption.