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What is the Windows port of Nessus?
Cenzic has ported the Nessus engine to the Microsoft Windows platform. This porting project was born out of Cenzic's interest in building a "best in class" web application security assessment product. Nessus is highly regarded in the security community as an excellent tool for assessing infrastructure vulnerabilities. Porting the Nessus engine to Windows provided Cenzic's engineers with valuable insight into infrastructure assessment. We would now like to offer this port back to the security community.
There are some problems with running nessus under windows (listed on the page) however it stills seems worthwhile for anyone that doesn't have *nix available to them.