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Darwin

Powered by Darwin Apple's open source projects allow developers to customize and enhance key Apple software. Through the open source model, Apple engineers and the open source community collaborate to create better, faster and more reliable products for our users.

Beneath the appealing, easy-to-use interface of Mac OS X is a rock-solid foundation that is engineered for stability, reliability, and performance. This foundation is a core operating system commonly known as Darwin. Darwin integrates a number of technologies, most importantly Mach 3.0, operating-system services based on 4.4BSD (Berkeley Software Distribution), high-performance networking facilities, and support for multiple integrated file systems.

News and Updates
WWDC 2004 Conference Session Descriptions Now Available
Sessions in the OS Foundations track will cover Darwin, advanced networking features integrated into the core OS, system-level security, and topics such as file systems, I/O Kit, and Apple's highly-optimized X11 implementation. [Mar 29 2004]
Ninth Annual Apple Design Awards
Apple is accepting submissions for the Ninth Annual Apple Design Awards, which recognize excellence in Application Software, QuickTime Content, and new for 2004 -- Performance Demos. [Mar 29 2004]
ADC Reference Library
The new ADC Reference Library is a key developer support tool. It integrates the core ADC technical resources — Documentation, Technical Notes, Sample Code, Release Notes, and Technical Q&As — and adds a highly functional interface that supports filtering, sorting, and browsing. Learn more about how to use it. [Mar 17 2004]
Getting Started with Darwin
This new document provides a guided introduction and learning path for developers new to Darwin. [Mar 17 2004]
Technical Resources
Darwin 7.3 Source Code Posted
The Darwin team is pleased to announce the availability of the source code for Darwin 7.3. These sources correspond to Mac OS X 10.3.3, and are available via the web.
Apple Releases HeaderDoc 8 Public Beta with MPGL
HeaderDoc 8 is the next generation of HeaderDoc, a tool for generating documentation from comments embedded in headers and source code.

HeaderDoc 8 adds many new features, including a new (optional) tagless syntax, code coloring, template-based index pages, improved error checking, man page output, and support for many new languages, including Java, JavaScript, Perl, PHP shell scripts, and Pascal.

HeaderDoc 8 also adds support for the Man Page Generation Language (MPGL), an XML dialect you can use to easily author well-formatted man pages. In addition to generating man pages from HeaderDoc content, HeaderDoc 8 also includes tools for converting MPGL files into man pages using the BSD mdoc macros.

Darwin 7.0.1 Installer CD Posted
The Darwin team is pleased to announce the availability of the Darwin 7.0.1 Installer CD. This is a single Installer CD that will boot and install Darwin on Macintosh computers supported by Mac OS X 10.3, as well as certain x86-based personal computers. The version of Darwin installed by this CD corresponds to the open source core of Mac OS X 10.3 and is available at the following URLs:

http://www.opensource.apple.com/darwinsource/images/darwin-701.iso.gz
http://www.opendarwin.org/downloads/7.0.1/darwin-701.iso.gz
MD5 (darwin-701.iso.gz) = 57e9cb37e9595436596b2fa5975d5569

The source code for Darwin 7.0.1 is available via the web. For more information, please see the Release Notes.
Darwin 7.0 Source Code Posted
The Darwin team is pleased to announce the availability of the source code for Darwin 7.0. These sources correspond to Mac OS X 10.3, and are available via the web. Also, the CVS repository has been updated for gcc, gdb, cups, efax, gimp-print, tcl, Rendezvous, StreamingServer, and HeaderDoc.
Mac OS X for UNIX Users Technology Brief (PDF)
This PDF download is an overview of Panther technologies, with a specific focus on Darwin, the Open Source, BSD-based core of Mac OS X. This document is intended for developers, researchers, system administrators, and others interested in the UNIX underpinnings of Mac OS X.
Apple Public Source License Version 2.0
Apple is pleased to announce the 2.0 version of the Apple Public Source License. It improves upon the OSI-approved APSL 1.2 by conforming to the definition of Free Software Licenses, as certified by the Free Software Foundation. We are grateful to Richard Stallman for his many helpful comments in this process. APSL 2.0 is also being submitted to the Open Source Initiative to certify its continued compliance with the Open Source Definition. For more details, see the announcement.
Apple ID APSL Registration
The Darwin team is pleased to announce that we are now using Apple IDs to indicate acceptance of the terms of the Apple Public Source License 2.0. Now the same Apple ID you use for Apple Developer Connection, the Knowledge Base, the Apple Store, the iTunes Music Store, or your .Mac account may be used to view and download APSL-licensed Darwin source code. Additionally, you may update your contact information via myinfo.apple.com or request a reminder for your password from iforgot.apple.com. If you don't already have an Apple ID, please obtain one at signin.apple.com by clicking the "New Account" button.
Also, access to the CVS repository has been updated.
Getting Started
Before you start working with open source projects, please read and familiarize yourself with the licensing terms that apply to that project.

For access to Apple-developed open source projects, you will need to register as a member of the Apple open source community by accepting the Apple Public Source License and choosing a user name and password. Non-Apple third party open source projects can be accessed without such registration.

Projects
See what open source projects are underway now.

Kernel Programming
A guide to programming in the Mac OS X (Darwin) kernel (under development).
Kernel Extensions Tutorials
Information on creating and debugging kernels.
"Darwin: Mac OS X's Core OS" (pdf)
A brief overview of Mac OS X's Darwin and its chief components. Includes discussion of Mach, I/O Kit, File System, Networking, BSD and others. Also includes information on developing kernel extensions. The Darwin Open Source initiative is also introduced.

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