$29.95 - EffeTech - Packet Sniffer

A HTTP protocol network sniffer and HTTP packet analyzer. Unlike other sniffers, it is dedicated to capture HTTP packets, rebuild and save the HTTP communications and files sent through HTTP protocol. New version supports chunked or gzip mode.
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$59.95 - IMDetect IM Sniffer, IM Monitor

IMDetect MSN Sniffer Pro is a handy network utility to capture and monitor MSN Messenger chat on network. All intercepted messages are saved into hard disk directly, which is more powerful than MSN Monitor. It also provides report and finding system.
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$149.00 - Ufasoft

LAN/ Wi-Fi/ IM sniffer Captures ICQ, IRC, Email, HTTP and other messages. Allows to capture all network traffic even in switched LAN. Sniffer supports parsing of following protocols: IP, TCP and many others.
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$79.95 - GJPSoft

UltraSniff is a powerful network sniffer, It is designed for capturing and analysis of the packets through the netwok. Also UltraSniff is a sockets sniffer that can show you detailed process-related listing of all IP, TCP, UDP endpoints on your system.
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