Socket Workbench 

Socket Workbench is the definitive tool for analysing socket communications that underlie the Internet and several types of inter-process communication.
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Paessler SNMP Tester 

Test and debug SNMP requests with Paessler SNMP Tester for free. Run simple SNMP requests against a device in your network, testing each single step of the SNMP request as it is logged into a logfile for analysis.
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DiamondCS Port Explorer 

See which ports belong to which programs! Port Explorer shows all the open ports on your system and what programs own them. Along with this ability it also has many tools including a packet sniffer, bandwidth throttling and country detection.
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LinkFerret WEP Decrypter 

LinkFerret Off-Line WEP Decrypter is a convenient, easy to use 802.11 packet capture and analysis aid. Its use provides a more secure path to the post-mortem analysis of captured 802.11 data by network admins and other authorized personnel.
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Network Probe 

Network Probe is a network monitor and protocol analyzer
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ME Cluster - Load Balance 

ME Cluster Load Balance is high availability software with proxy technology to perform high number of connections, low response time, continuous availability and powerful security. Support packet relay, Http redirection, IP Fail Over, and Firewall.
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