Free alternative to Abyss Web Server X1

I did try 开发者_如何转开发to find a more suitable place for this question, and contemplated posting it on Server Fault, but since there's no real "fault" here, I chose to ask it on S/O.

Does anybody know of any free alternatives to the free Abyss Web Server X1 app, that actually work?

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lighttpd is a good candidate, it is small, lightweight and supports CGI/fCGI. It works on Linux too, and supports ASP.net using mono/fCGI under Linux, OSX and Windows. PHP is also supported ;-)