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

Network stumbler for WaveLAN/IEEE wireless networking
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

AirPcap is the first open, affordable, and easy-to-deploy WLAN (802.11b/g) packet capture solution for the Windows platform.
Building or securing wireless networks can be a challenge when your tools don't understand radio waves. AirPcap enables troubleshooting tools like Wireshark to provide information about wireless protocols and radio signals. It enables you to capture and analyze low-level 802.11b/g wireless traffic, including control frames, management frames, and power information, using Wireshark.
AirPcap provides industry-leading capability to simultaneously capture on multiple channels. To facilitate the use of the MCA feature we offer the AirPcap 3-Pack that includes: Three AirPcap adapters, one 4-port USB 2.0 hub, and The Single Download Network Toolkit.
Category:   Software > Sniffing

802.11b frame handling (capturing, creation, injection)
Category:   Software > Sniffing