XAMPP - XAMPP is a free and open-source cross-platform web server that is primarily used when locally developing web applications.
WebSocket-Node - A WebSocket Implementation for Node.JS ( Draft -08 through the final RFC 6455 )
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Socket.io - Realtime application framework (Node.JS server)
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Jetty - Increase occupancy, reduce costs, and more protection with Jetty’s financial services products for properties and residents.