Hash Suite is a very efficient auditing tool for Windows password hashes (LM, NTLM, and Domain Cached Credentials also known as DCC or MSCash). It is very fast, yet it has modest memory requirements even when attacking a million of hashes at once. The GUI is simple, yet uses modern features offered by Windows 7. Besides the password security auditing program itself, there's an included reports engine that generates reports in multiple formats, including PDF.