PWCHECK-PRO

PWCHECK-PRO is an enhanced version of PWCHECK. It offers several additional facilities:

bulletOptionally disclose clear-text passwords
bulletPerform a brute-force attack on a single userid
bulletSupport for Mixed Case passwords (z/OS 1.7 and later)
bulletAbility to exclude users or groups based in input parameters
bulletAbility to find all short passwords (4 characters or fewer) in a single execution

Have a look at the documentation for these features.

Full PWCHECK documentation is here.