Abstract: A cooperative scheduling system for cooperative scheduling between large numbers of independent users, the users being divided into a several interest groups, comprises: a networked server, a scheduling database associated with the networked server for storing scheduling data, the scheduling database allowing categorization of the data for the interest groups; a multi-user input interface for allowing multiple remotely located users to enter scheduling data to the scheduling database, the data being categorized for the interest groups; and a multi-user output interface for allowing multiple remotely located users to retrieve scheduling data from the scheduling database, the output interface including a configuration for filtering of the retrieval according to category. Thus scheduling data is stored at a central location in a cooperative effort and is retrieved according to the level of relevance to the user.