> Does anyone know of a freely available BACnet browser?
Yes Inneasoft BACnet Explorer free version (InneaBACnetExplorer) allows you to discover and visualize your BACnet / IP network.
Automatic discovery of all the BACnet/IP devices, objects and properties of your network and display all the devices and their objects in a tree view with a direct access to all their properties. Graphically display calendars and schedules.