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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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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HttpDetect (EffeTech HTTP Sniffer) 

A HTTP protocol network sniffer, packet analyzer and file rebuilder. Unlike most other sniffers, it is dedicated to capture IP packets containing HTTP protocol, rebuild and save the HTTP communications and files sent through HTTP protocol.
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LinkFerret Remote Capture Agent 

Remote is an efficient, easy to use, low cost, Ethernet/802.11 capture agent. Network admins may use it in scripts to periodically sample and store network traffic. Non-technical personnel can capture files and automatically forward results.
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PRTG - Paessler Router Traffic Grapher 

An easy to use Windows solution for network/bandwidth usage monitoring. The software supports SNMP, packet sniffing and netflow to generate live readings and trend data to optimize the efficiency of routers, servers and other network components.
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