HTTP Servers

http://httpd.apache.org/

http://bauk.ws/

http://www.cherokee-project.com/

http://www.mortbay.org/jetty/

http://www.lighttpd.net/

http://nginx.net/

http://www.acme.com/software/thttpd/

http://tomcat.apache.org/

http://www.caucho.com/

http://mongrel.rubyforge.org/

http://www.microsoft.com/iis

http://www.litespeedtech.com/ Apache compatible.

http://www.zeus.com/