Ophcrack is a 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 GTK Graphical User Interface and runs on Mac OS X (Intel CPU), Windows, as well as on Linux.Ophcrack recovers 99.9% of alphanumeric passwords in seconds.

Ссылка: http://kent.dl.../sourceforge/ophcrack/ophcrack-3.3.0.tar.bz2