Aircrack-ng - Used to Crack Wifi Passwords

Aircrack-ng - Used to Crack Wifi Passwords 

Description

Aircrack-ng is an 802.11 WEP and WPA-PSK keys cracking program that can recover keys once enough data packets have been captured. It implements the standard FMS attack along with some optimizations like KoreK attacks, as well as the all-new PTW attack, thus making the attack much faster compared to other WEP cracking tools.

In fact, Aircrack-ng is a set of tools for auditing wireless networks.

What is Aircrack-ng ?

Aircrack-ng is the next generation of aircrack with lots of new features:

• Better documentation (wiki, manpages) and support 
  (Forum, trac, IRC: #aircrack-ng on Freenode).
• More cards/drivers supported
• More OS and platforms supported
• New WEP attack: PTW
• WEP dictionary attack
• Fragmentation attack
• Improved cracking speed
• Capture with multiple cards
• New tools: airtun-ng, packetforge-ng (improved arpforge), wesside-ng, easside-ng, airserv-ng, airolib-ng, airdriver-ng, airbase-ng,tkiptun-ng and airdecloak-ng
• Optimizations, other improvements and bug fixing

More Details : http://www.aircrack-ng.org/