Network Protocol Analyzers

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  WiresharkFree

  The world's foremost network protocol analyzer. 

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  SmartSniffFree

  Capture TCP/IP packets on your network adapter.

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  Open Visual TracerouteFree

  Open source cross-platform visual networking tool.

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  DNSQuerySnifferFree

  A network sniffer utility that shows the DNS queries sent on your system.

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  HTTPNetworkSnifferFree

  A packet sniffer tool that captures all HTTP requests/responses sent between the Web browser and the Web server and displays them in a simple table.

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  CountryTraceRouteFree

  Displays the country of the owner of every IP address found in the Traceroute.