WPMU DEV - WPMU offers WordPress Plugins, WordPress Themes, WordPress Multisite and BuddyPress Plugins and Themes.
GoodBarber - GoodBarber is a mobile app creation platform.
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.
Dropsource - Mobile development platform for building native iOS & Android apps
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).
Bizness Apps - Create your own app or become a reseller and build apps for others