kimate is a bash-script for linux with the use to connect to wireless networks, which allow only some clients with special mac-adresses to participate. It analyses log-files from kismet and tests the wlan for them. The whole thing works if one of the special clients leaves the network and you can use the mac-adress for your purpose.
Category:   Software > Sniffing

Ethereal is a free network protocol analyzer for Unix and Windows. It allows you to examine data from a live network or from a capture file on disk. You can interactively browse the capture data, viewing summary and detail information for each packet. Ethereal has several powerful features, including a rich display filter language and the ability to view the reconstructed stream of a TCP session.
Category:   Software > Sniffing

Sniffem is a Windows packet sniffer and network analyser that captures, monitors and decodes the data traveling thorugh your network including your Dialup or DSL uplink. It features advanced hardware and software filtering options and TCP/IP traffic monitoring as well as an IP address book that lets you assign aliases for frequently encountered IP addreses. Sniffem also comes with a built-in schedulrer to enable capturing at user defined intervals.Additional features include support for 803.2 (wireless) decoding, PPPOE decapsulation, IPX, Ethernet II frames support and more.
Category:   Software > Sniffing

Ettercap is a suite for man in the middle attacks on LAN. It features sniffing of live connections, content filtering on the fly and many other interesting tricks.
It supports active and passive dissection of many protocols (even ciphered ones) and includes many feature for network and host analysis.
Category:   Software > Sniffing

AirTraf 1.0 is a wireless sniffer that can detect and determine exactly what is being transmitted over 802.11 wireless networks. This open-source program tracks and identifies legitimate and rogue access points, keeps performance statistics on a by-user and by-protocol basis, measures the signal strength of network components, and more. Developed as an open source program, AirTraf is available in a stand-alone Linux package.
Category:   Software > Sniffing