John the Ripper is a fast password cracker which is intended to be both elements rich and quick. It combines a few breaking modes in one program and is completely configurable for your specific needs for Offline Password Cracking. The tool underpins (and autodetects) the accompanying Unix crypt(3) hash sorts: conventional DES-based, bigcrypt, BSDI broadened DES, MD5-based (additionally utilized on Linux and in Cisco IOS), and OpenBSD Blowfish-based. The cracker is accessible for several different platforms which empower you to utilize a similar cracker everywhere.”]
Source: https://gbhackers.com/offline-password-attack-john-ripper/