The need of supporting office work with suitable computer based tools implies the investigation of the deep aspects of cooperation within the office. Cooperation, to the extent that is made up of communication and coordination, can be fully characterized under the assumption that an office is a special linguistic game, constituted by a set of rules defining the conversations possible within it, continuously changing under the perturbations created by the speech acts its member do performing the conversations. Within this conceptual context, a prototypal software package, CHAOS-1, is presented. CHAOS-1 aims both at supporting the conversations and at improving coordination of the office activities.This paper discusses CHAOS-1 with respect to similar proposals, presents its overall architecture, shows some examples of its use and sketches its new releases under development.