GoCrack!

John the Ripper is a fast password cracker, currently available for many flavors of Unix, 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 systems, supported out of the box are Windows LM hashes, plus lots of other hashes and ciphers in the community-enhanced version.

Windows stores its user information, including crypted versions of the passwords, in a file called 'sam', usually found in \windows\system32\config. This file is a part of the registry, in a binary format previously undocumented, and not easily accessible. But thanks to a German(?) named B.D, I've now made a program that understands the registry.This site provides CD and floppy images for end users to easily edit their forgotten passwords. But it also provides full source code and binary builds of the tools to allow others to use as they like for other purposes. Registry format documentation also available. »

Ophcrack is a Windows Password cracker based on Rainbow Tables.

Hashcat GUI overlay for Windows and Linux.

recALL is free and portable multifunctional password recovery and auditing solution for Windows - instantly finds and recovers passwords from more than 200 popular applications (FTP, E-mail clients, Instant Messengers, Browsers) and recovering licenses from over 2800 programs.

Worlds fastest md5crypt, phpass, mscash2 and WPA / WPA2 cracker &Worlds first and only GPGPU based rule engine.

L0phtCrack is a password auditing and recovery application (now called L0phtCrack 6) originally produced by Mudge from L0pht Heavy Industries. It is used to test password strength and sometimes to recover lost Microsoft Windows passwords, by using dictionary, brute-force, hybrid attacks, and rainbow tables. It was one of the crackers' tools of choice, although most use old versions because of its low price and high availability.

World Fastest MD5 cracker BarsWF with AMD and NVIDIA support.

A CUDA & OpenCL accelerated rainbow table implementation from the ground up, and a CUDA hash brute forcing tool with support for many hash types including MD5, SHA1, LM, NTLM, and lots more!

MDCrack is a free featureful password cracker designed to bruteforce several commonly used hash algorithms at a very aggressive speed rate. It can retrieve any password made of up to 16 characters and allowing up to 55 characters with an additional user salt.

Worlds fastest NTLM, MD5, SHA1, SHA256, descrypt and SL3 cracker.