Hashcat
featuredWorld's fastest password cracker with GPU acceleration. Supports hundreds of hash types.
John the Ripper
featuredClassic password cracker for offline hash attacks and format detection.
CeWL
Custom wordlist generator from target website content — useful for org-specific passwords.
Hydra
Online password brute-forcer supporting many protocols (SSH, FTP, HTTP, etc.).
Medusa
Parallel, modular login brute-forcer similar to Hydra.