Retina, WinNT, http://www.eEye.com/retina
Price: $795, $350 for one year subscription (and get a copy for free)

Retina is a security scanner by the eEye Digital Security Team that uses a
from of AI (artificial intelligence) to test a larger range of
vulnerabilities than most security scanners.  You can find more
information on it at http://www.eEye.com/retina.