http://winfingerprint.sourceforge.net which is the home of winfingerprint and wininterrogate as well as a few internet worm scanners (CodeRed, Nimda, SQL)
http://aptools.sourceforge.net which is the home of an 802.11b Access Point Scanner that I developed / released at SANS San Diego 10/15/2001. The presentation can be found here.
Honeynet Project presentation given at Computer Security 2001 November 28-30 Mexico City can be found here.