NetVizor 

NetVizor is the latest in powerful network surveillance. Monitor your entire network from one centralized location! NetVizor allows you to track workstations and individual users that may use multiple PC's on a network.
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Net Spy Pro 

From the creators of AceSpy, Net Spy Pro is the ultimate network monitoring and administration software suite. Monitors all activity on any TCP/IP network, and includes realtime surveillance features that let you view and control any PC on your LAN.
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