Doesn't scan and clean for spyware - it prevents it from ever being installed
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Windows
Freeware
Apr 10, 2009 - 12:21 PM

4.7
(163 votes)
Wireshark for Windows 1.3.1 Beta
Network protocol analyzer for Windows
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Windows
Open Source
Oct 27, 2009 - 4:23 PM

4.8
(139 votes)
Customizable network bandwidth monitoring program for Windows
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Windows
Freeware
Aug 13, 2007 - 5:52 PM

4.7
(142 votes)
Open source library for packet capture and network analysis for the Win32 platforms
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Windows
Open Source
Jun 12, 2008 - 3:17 PM

4.7
(54 votes)
Very Simple Network Scanner 1.4.2.192 Alpha
GUI tool that does a Ping Scan and simply reports all device IP's it found
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Windows
Freeware
Jul 10, 2009 - 5:42 PM

4.6
(10 votes)
Command Line Fast Ping Scanner
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Windows
Freeware
Mar 16, 2009 - 11:27 AM

4.6
(9 votes)
Bandwidth meter and monitor which measures and displays all network traffic
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Windows
Shareware
Oct 30, 2009 - 12:27 PM

3.4
(193 votes)
Full-featured network toolkit
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Windows
Shareware
Sep 8, 2009 - 3:18 PM

3.4
(30 votes)
Get detailed analysis of computers and their components
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Windows
Shareware
Dec 26, 2006 - 10:49 AM
Shows all open TCP/IP and UDP ports
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Windows
Freeware
Jun 19, 2002 - 10:13 AM

4.6
(10 votes)
Easily shows your hostname and all your local IP addresses
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Windows
Freeware
Apr 5, 2004 - 6:13 AM
Useful for continuously monitoring the quality and status of your Internet connection
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Windows
Freeware
Oct 18, 2004 - 1:50 AM
Monitor the status of remote hosts
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Windows
Freeware
Sep 2, 2000 - 3:29 AM
Monitor network activity capable of capturing and analyzing packets on any Ethernet network
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Windows
Shareware
Dec 3, 2008 - 3:50 PM

4.3
(19 votes)
Perform a ping on all the IP address ranges you manage
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Windows
Freeware
Jul 28, 2003 - 4:37 AM