EmacsHttpd is an HTTP server embedded in the Emacs. It supports GET and HEAD requests for static and dynamic content. Since Emacs doesn’t support server sockets, you need to cheat a little and run it from a service such as tcpserver or inetd. You can get better performance by running a proxy server which forwards requests to a persistent emacs instance using gnuserv; see the commentary for details.
To run this from a service such as inetd, using a line such as the following in /etc/inetd.conf:
8080 stream tcp nowait.10000 nobody /usr/bin/emacs emacs -batch -l /path/to/httpd.el -f httpd-serve
To use tcpserver instead, invoke as
/usr/bin/tcpserver 0 8080 /usr/bin/fixcrio /usr/bin/emacs -batch -l /path/to/httpd.el -f httpd-serve