Network Auditor allows you to scan the machines on your network, to determine what hardware and software is installed on these machines, and then to add these machines to a database. This database constitutes your Network Inventory.
Network Auditor can also compare the hardware and software that it finds on machines against what you have recorded in your inventory and alert you of changes (for example, if a piece of hardware stops working or if new software is installed on a machine).
) "Network Auditor - Click to enlarge screenshot")