Network Monitoring Software

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  NetworkOpenedFilesFree

  Displays the list of all files that are currently opened by other computers on your network.

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  NetworkUsageViewFree

  Extracts and displays the network usage information.

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  ShaPlus Bandwidth MeterFree

  Bandwidth monitoring software to track Internet bandwidth usage.

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  TMeter Freeware EditionFree

  A powerful traffic accounting and Internet sharing tool.

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  WhoIsConnectedSnifferFree

  Detect who is connected to your network without scanning.

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  DNSLookupViewFree
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  LiveTcpUdpWatchFree

  Displays live information about all TCP and UDP activity on your system. 

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  NetworkCountersWatchFree

  A tool for Windows that displays system counters for every network interface on your system.

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  SoftPerfect NetGeniusFree to try

  Internet connection optimisation and application control.

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  SolarWinds User Device TrackerFree to try

  Network device tracking software designed to locate users and devices on your network.

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  WhatRouteFree

  A Network Utility for MacOS X.