Kon-Boot - Kon-Boot is a password hacking, password recovery tool for Windows and Mac.
CrackStation - CrackStation is a web-based service that is used for retrieving passwords by cracking their hashes.
John the Ripper - A fast password cracker for Unix, macOS, Windows, DOS, BeOS, and OpenVMS
MDCrack - MDcrack is a an aggressive cracker for MD2 MD4 MD5 HMAC-MD4 HMAC-MD5 NTLM PIX IOS APACHE FREEBSD IPB2 CRC32 CRC32B ADLER32 hashes
Password Recovery Bundle - Quickly recover or reset passwords for Windows, PDF, ZIP, RAR, Office Word/Excel/PowerPoint documents. Retrieve passwords for instant messengers, email accounts, web browsers, FTP logins, and more.
hashcat - The World's Fastest CPU/GPU powered password cracker.