WPMU DEV - WPMU offers WordPress Plugins, WordPress Themes, WordPress Multisite and BuddyPress Plugins and Themes.
Sourcegraph - Sourcegraph is a free, self-hosted code search and intelligence server that helps developers find, review, understand, and debug code. Use it with any Git code host for teams from 1 to 10,000+.
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.
Text Sherlock - Provides a fast, easy to install and use search engine for text but, mostly for source code.
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).
Krugle - Krugle is the complete enterprise solution for search targeted to the development organization.