This is the complete Xcode developer toolset for building apps that run on Apple TV, Apple Watch, iPhone, iPad, and Mac. It includes the Xcode IDE, simulators, and all the required tools and frameworks to build apps for iOS, watchOS, tvOS, and OS X.
XAMPP is the most popular PHP development environment
XAMPP is a completely free, easy to install Apache distribution containing MariaDB, PHP, and Perl. The XAMPP open source package has been set up to be incredibly easy to install and to use.
A super handy tool when using Finder and you want to open a terminal window to the current directory. Install this app, drag it to a finder window, and you always have a button in your finder windows to click and open a terminal window in that directory.