MiniServ
MiniServ is an open source web server that I implemented in C. It is very lightweight and supports only HTML file serving. It was originally intended to be a documentation file server on my college network. It can also be used for embedded applications very easily. It is tiny and has a memory footprint of 14K bytes!
It has gained some popularity after being posted on the SourceForge website and there is now a miniature community that is helping me develop it further. Future plans are to implement a PHP engine and do some code optimization work.