Glassfish

GlassFish v3, built by the GlassFish community, is the first compatible implementation of the Java…
appserver.io

appserver.io is a multithreaded application server for php written in php.
Apache Geronimo

Index.
Mako Server

The Mako Server is an application server with an API that loosely resembles the Java Servlet API…
nginx

A high performance free open source web server powering busiest sites on the Internet.
Cherokee

High-performance web server.
Caddy

The HTTP/2 Web Server with Automatic HTTPS.
JBoss

JBoss is Red Hats Java EE 5-compliant (soon Java EE 6-compliant) application server.
Monitor in a Box

Instantly usable, open source monitoring.
simperium

Move data everywhere it’s needed, instantly and automatically.