WPMU DEV - WPMU offers WordPress Plugins, WordPress Themes, WordPress Multisite and BuddyPress Plugins and Themes.
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).
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
.NET - .NET is a free, cross-platform, open source developer platform for building many different types of applications.