http://cherokee-project.com/ http://cherokee-project.com/ and http://www.lighttpd.net/ http://www.lighttpd.net/ are the only other ones I've heard of, and they

http://cherokee-project.com/ http://cherokee-project.com/ and http://www.lighttpd.net/ http://www.lighttpd.net/ are the only other ones I've heard of, and they seem to have their own niche they target. There is also https://github.com/okws/okws https://github.com/okws/okws. I'm sure there are many more, but none of them have sizable market share, especially compared to nginx/apache.