Free - ArechiSoft

EtherSnoop light is a free network sniffer, designed for capturing and analysis of the packets going through the network.
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$199.00 - Seekford Solutions, inc

Ping Wizard lets you conduct tests on the speed of your network. Ping Wizard sends a special packet to a server, and times how long it takes to get a reply. This time is the total latency of the packets that you send when communicating with servers.
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Free - Look@Net.com

"easy Look at Net" is a simple ports scanner, packets sniffer and web-page source loader. Multithread ports scanner and packets sniffer specifically made to scan opened TCP ports,
packets are filtered by incoming and outgoing, by IP addresses.
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Free - Nsasoft LLC.

DnsEye is monitoring network traffic by capturing DNS packets in network and displays the host names resolve information. The program allows to monitor requested URLs in network, to open it in browser and save captured DNS name list in the file.
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