John the Ripper is a fast password cracker, currently it is 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...
ITS A FREE OPEN SOURCE SOFTWARE
YOU CAN DOWNLOAD IT FOR FREE
WHAT CAN YOU DO WITH JOHN THE RIPPER PASSWORD CRACKER
CRACK WINDOWS PASSWORDS FOR FREE
CRACK UNIX OS PASSWORD FOR FREE
CRACK DOS OS PASSWORD FOR FREE
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