Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
WPMU DEV - WPMU offers WordPress Plugins, WordPress Themes, WordPress Multisite and BuddyPress Plugins and Themes.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.