System for synchronizing web browsers in the client/server circuit, in which the first application on one computer is connected through a communication link with a type of web browser application on the other computer, distinguished by that it contains web server (2), control panel-controlling interface (8), data base SQL (3), consisted of synchronization table (4) and a data table (5) on the first computer, and the web server (2) has also synchronizing circuit (6) as well as the panel of the system management (7), controlling at least two terminal devices, which are remote client computers (9), (10) and (11), equipped with web browser with synchronization module.