Departamento de Ciencias de la Computaci¶on

This work presents the development of an instantaneous messaging system, which is centered on the distributed handling of user groups. The method proposed for handling of groups has several distinctive characteristics: the non existence of a moderator for each group, allowing any user to abandon the group at any moment without putting in danger the group¶s existence, and the absence of a server where the user must be authenticated every time that he wants to engage in conversation with somebody, which allows that a more direct communication be established with the person with which communication is desired