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...
Cost / License
- Free
- Open Source
Platforms
- Windows
- Linux
- Haiku


Comments about John the Ripper as an Alternative to Kon-Boot
Password bypass function isn't there, which is present in KonBoot


Some users think John the Ripper is a great Kon-Boot alternative, some don't.
John the Ripper is the most popular Windows & Linux alternative to Kon-Boot.
John the Ripper is the most popular Open Source & free alternative to Kon-Boot.
- John the Ripper is Free and Open Source
















































John the Ripper is a password cracker where Kon-Boot bypasses the login password all together.