WinGuard is an open software platform (PSIM) linking diverse security, building management and communication systems of different manufacturers. Proprietary interfaces enable transfer of event messages as well as comprehensive control of all linked systems. All system states are collectively displayed in only one user interface. The user profits from a uniform and intuitive operation of a wide variety of different systems. In addition, WinGuard offers program-guided instructions for event processing, for quick and secure management of the situation.