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
Smart Tab Mute - Ensures that only one tab is playing sound at the same time
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
MuteTab - Better tab muting in Chrome
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.