AirSnort is a wireless LAN (WLAN) tool which cracks encryption keys on 802.11b WEP networks. AirSnort operates by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.
BFG is a modified hydra tool, which now supports generating passwords in brute-force mode, unlike the original hydra. Of course, full source code is provided, and it should compile on all systems where hydra itself compiles, which means all UNIX-based systems including Linux, BSD, Mac OS, Windows (cygwin), etc.
Cain & Abel is a password recovery tool for Microsoft Operating Systems. It allows easy recovery of various kind of passwords by sniffing the network, cracking encrypted passwords using Dictionary, Brute-Force and Cryptanalysis attacks, recording VoIP conversations, decoding scrambled passwords, recovering wireless network keys, revealing password boxes, uncovering cached passwords and analyzing routing protocols. The program does not exploit any software vulnerabilities or bugs that could not be fixed with little effort. It covers some security aspects/weakness present in protocol's standards, authentication methods and caching mechanisms; its main purpose is the simplified recovery of passwords and credentials from various sources, however it also ships some "non standard" utilities for Microsoft Windows users.
Cain & Abel has been developed in the hope that it will be useful for network administrators, teachers, security consultants/professionals, forensic staff, security software vendors, professional penetration tester and everyone else that plans to use it for ethical reasons. The author will not help or support any illegal activity done with this program. Be warned that there is the possibility that you will cause damages and/or loss of data using this software and that in no events shall the author be liable for such damages or loss of data. Please carefully read the License Agreement included in the program before using it.
John the Ripper is a fast password cracker, currently available for many flavors of Unix (11 are officially supported, not counting different architectures), Windows, DOS, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix flavors, supported out of the box are Kerberos AFS and Windows NT/2000/XP/2003 LM hashes, plus several more with contributed patches.
L0phtCrack 6 is packed with powerful features such as scheduling, hash extraction from 64 bit Windows versions, multiprocessor algorithms, and networks monitoring and decoding. Yet it is still the easiest to use password auditing and recovery software available.
Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms.
* » Runs on Windows, Linux/Unix, Mac OS X, ...
* » Cracks LM and NTLM hashes.
* » Free tables available for Windows XP and Vista.
* » Brute-force module for simple passwords.
* » LiveCD available to simplify the cracking.
* » Loads hashes from encrypted SAM recovered from a Windows partition, Vista included.
* » Free and open source software (GPL).