Aircrack-ng is a network software suite consisting of a detector, packet sniffer, WEP and WPA/WPA2-PSK cracker and analysis tool for 802.11 wireless LANs. It works with any wireless network interface controller whose driver supports raw monitoring mode and can sniff 802.11a, 802.11b and 802.11g traffic.

It includes this suite of tools:

Tool	Description
aircrack-ng	Cracks WEP keys using the Fluhrer, Mantin and Shamir attack (FMS) attack, PTW attack, and dictionary attacks, and WPA/WPA2-PSK using dictionary attacks.
airdecap-ng	Decrypts WEP or WPA encrypted capture files with known key.
airmon-ng	Places different cards in monitor mode.
aireplay-ng	Packet injector (Linux, and Windows with CommView drivers).
airodump-ng	Packet sniffer: Places air traffic into pcap or IVS files and shows information about networks.
airtun-ng	Virtual tunnel interface creator.
packetforge-ng	Creates encrypted packets for injection.
ivstools	Tools to merge and convert.
airbase-ng	Incorporates techniques for attacking client, as opposed to Access Points.
airdecloak-ng	Removes WEP cloaking from pcap files.
airolib-ng	Stores and manages ESSID and password lists and compute Pairwise Master Keys.
airserv-ng	Allows to access the wireless card from other computers.
buddy-ng	The helper server for easside-ng, run on a remote computer.
easside-ng	A tool for communicating to an access point, without the WEP key.
tkiptun-ng	WPA/TKIP attack tool.
wesside-ng	Automatic tool for WEP key recovery.