Openwall

Alternative password shadowing scheme

Password/passphrase strength checking and policy enforcement

John the Ripper jumbo - advanced offline password cracker, which supports hundreds of hash and cipher types, and runs on many operating systems, CPUs, GPUs, and even some FPGAs

Web interface to mailing list archives

Password-based key derivation function and password hashing scheme building upon scrypt

Proof-of-work scheme building upon yescrypt and scrypt

Tiny POP3 daemon designed with security as the primary goal

A collection of samples for development and testing of John the Ripper and other password security auditing and password recovery tools

Provide per-user private directories under /tmp as part of PAM session or account management

Test Suite for John the Ripper