lcrack / hashcat-utils

l0phtcrack-style offline password auditing on Linux uses john and hashcat; see also john (j.rst) and hashcat (h.rst).

$ hashcat -m 1000 -a 0 nt.hash rockyou.txt
$ hashcat -m 13100 -a 0 spn.hash rockyou.txt
$ john --wordlist=rockyou.txt nt.hash