OpenResty - Turning Nginx into a Full-fledged Web App Server
Wildfly - WildFly is a flexible, lightweight application server.
Phusion Passenger - Phusion Passenger is a multi-language (Ruby, Python, Node) web & app server which can integrate into Apache and Nginx
Forge - Static web hosting made simple
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