Apps similar to John the Ripper include Kon-Boot. It's paid, but hashcat and ophcrack are free. Other options are Offline NT Password & Registry Editor, LaZagne, Trinity Rescue Kit and oclHashcat-plus. You can choose from more than 10 Penetration Testing Tools like John the Ripper for Windows, Linux and Mac.
Kon-Boot is an application which will silently bypass the authentication process of Windows based operating systems. Without overwriting your old password! In other words you can login to your Windows profile without knowing your password.
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EU
Ophcrack is a Windows Password cracker based on Rainbow Tables.
Features
Cracks LM and NTLM Windows hashes Free tables available for Windows XP, Vista and 7 Brute-force module for simple passwords Audit mode and CSV export Real-time graphs to analyze the pas.
Switzerland
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.
Norway
Trinity Rescue Kit or TRK is a free live Linux distribution that aims specifically at recovery and repair operations on Windows machines, but is equally usable for Linux recovery issues. Since version 3.
BelgiumEU
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 7) 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...
United States
crowbarDMG is a dictionary attack tool for DMG and Spareimage files for Macs. It does require 10.5 Leopard. It really wasn’t worth the trouble to redo things to work on Tiger. It is completely free, so enjoy. Be sure to read the included PDF readme file.
