Open Source
Open source software is at the heart of Apple platforms and developer tools, and Apple continues to contribute and release significant quantities of open source code.
Swift
Swift is a powerful and intuitive programming language designed to give developers the freedom and capabilities they need to create a new generation of cutting-edge apps. Swift is easy to learn and use and it’s open source, so anyone with an idea can create something incredible.
WebKit
WebKit — the open source rendering engine introduced by Apple — powers Safari on OS X and iOS. WebKit features blazing performance and extensive standards support. And because it’s open source, developers can examine WebKit code and contribute to the community.
iOS and OS X
ResearchKit
ResearchKit is an open source framework that enables an iOS app to become a powerful tool for medical research. It includes a variety of customizable modules that you can build upon and share with the community.
View the ResearchKit Open Source Project
Bonjour
Bonjour enables automatic discovery of devices and services on a local network using industry standard IP protocols. It makes it easy to discover, publish, and resolve network services with a sophisticated, yet easy-to-use, programming interface.
UNIX
OS X combines a proven UNIX foundation with the easy-to-use Mac interface to bring industrial-strength computing to the desktop.
Command Line Tools
Download command line developer tools, including Apple LLVM compiler, linker, and Make.
Open Source Projects
View iOS, OS X, and developer tool open source projects.
Documentation
View open source related documentation.