Hashcat

Hashcat is a free, open-source password recovery utility designed for speed and broad hardware support. Available for Linux, Windows, and macOS, it can use CPUs, GPUs, and other devices supported by an OpenCL runtime, including mixed devices in one system. Its features include multi-hash and multi-device processing, performance tuning, benchmarking, thermal monitoring, and tools for managing sessions, pausing and resuming jobs, and restoring progress.

Users can provide password candidates from files or standard input, apply rules, and distribute cracking workloads across networks. Hashcat supports more than 450 hash types, spanning common algorithms such as MD5 and SHA, password-hashing methods including bcrypt, scrypt, and Argon2, and formats used by operating systems, databases, network protocols, encrypted files, and disk containers. The project provides downloadable binaries and source code, along with documentation, a forum, a hash-format converter, and a GitHub repository for development versions.

Its extensive hardware and format support makes it a flexible tool for authorized password recovery and security testing