Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
nginx - A high performance free open source web server powering busiest sites on the Internet.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
lighttpd - A secure, fast, compliant, and very flexible web-server that has been optimized for high-performance environments