ShadowIMSniffer - ICQ/MSN Monitor-Sniffer is a handy network utility to capture and log/monitor ICQ/MSN Instant Messages from computers within the same LAN. ICQ/MSN Monitor Sniffer supports messaging through ICQ/MSN server with formats of plain text,RTF or HTML.
Wireless Snif - LAN and WLAN Sniffer. A program for low-level packets capturing and analyzing in real-time. Allows to capture all network traffic even in switched LAN. Sniffer supports parsing of following protocols: IP, TCP and many others.