John the Ripper
Tool Author: Solar Designer and community
John the Ripper, or John (or JTR) is a very fast CPU based password cracker. It is very easy to use and is often the first tool used when trying to crack a password. John is very good at getting shorter passwords, so I usually use John first, to get the low hanging fruit or easier passwords, and then move to Hashcat for more complex cracking. As such, we will only quickly cover John.