mini_httpd - mini_httpd is a small HTTP server for low or medium traffic sites.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
thttpd - thttpd is a simple, small, portable, fast, and secure HTTP server.
nginx - A high performance free open source web server powering busiest sites on the Internet.
HTTP - is an application protocol for distributed, collaborative, and hypermedia information systems.
XAMPP - XAMPP is a free and open-source cross-platform web server that is primarily used when locally developing web applications.