Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Caddy - The HTTP/2 Web Server with Automatic HTTPS
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Cherokee - High-performance web server
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.