Abstract: A network community system capable of spontaneously, autonomously forming and managing a network community space allowing interactive communication, exchange of opinions and exchange of information among users of a plurality of computers connected to a computer network such as the Internet is disclosed. This system is an application software (CSW) installed in each of the users which become community members and functions as a platform for forming the network community space. This system constructs a logical path network for exchanging agents among the computers according to the startup of the CSW. Each of the agents transports a message written by a computer user who transmits the message to the computers of other users and registers the message in a message database.