Manages appointments and client information in a place where one or more professionals work. The program is useful for such varied enterprises as hair dressers, lawyers and accountants. Invoices as a result of appointments can be prepared. Mailings to selected customers can be made. The user can chose between an English and French interface (with more languages to come). Backups of data can be easily made directly from the program. Also, recovery of data can be easily and automatically effected following corruption of files resulting from system break downs. The shareware program runs on one computer but an upgrade can be obtained for simultaneous use on two or more computers on a network. Also, an upgrade can be obtained for a version of the program designed specifically for medical clinics.