NETObserve 

NETObserve allows you to remotely gain total control of you PC by connecting to it through a web browser! Features include transferring/browsing files, editing registry keys, system moderating and administration, realtime PC monitoring, and more!
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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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