Apple Releases Darwin 1.0 Open Source

New Mac OS Core and QuickTime Streaming Server Released to Tens
Of Thousands of Developers

INTERNET WORLD, LOS ANGELES, April 5 /PRNewswire/ -- Apple(R) (Nasdaq:
AAPL) today announced the release of Darwin 1.0, the advanced operating
system core at the heart of Mac(R) OS X, and the release of an updated
Darwin Streaming Server. Darwin's open source model allows the tens of
thousands of registered Darwin developers to modify, customize and extend
key Apple software, including the modern mach kernel and BSD layers found
in Apple's next generation operating system, Mac OS X.

"The core of Mac OS X is the only mainstream operating system following an
open source model," said Philip Schiller, Apple's vice president of
Worldwide Product Marketing. "The new Darwin 1.0 posting includes some of
the most advanced operating system technology available, and it's open to
our customers and developers so that we may collaborate on the future of
the Mac OS."

The new Darwin kernel is based on FreeBSD and Mach 3.0 technologies and
supports the Kernel Extension Developer Kit (KDK) for developing drivers
and loadable modules. Darwin 1.0 gives developers access to essential Mac
OS X source code. This allows developers to enhance the feature set,
performance and quality of Mac OS X products in partnership with Apple
engineers. Darwin 1.0 is processor-independent and is built for PowerPC and
Intel platforms, enabling Open Source developers to work on Darwin projects
on the widest choice of computer systems.

In addition to Darwin 1.0, Apple also announced an update to the Darwin
Streaming Server, the open source version of Apple's QuickTime(TM)
Streaming Server software, which is used to stream high-quality audio and
video over the Internet. The Darwin Streaming Server is the only open
source, standards- based and free Internet streaming server. This update
makes the Darwin Streaming Server available for Windows NT-based systems,
expanding support for developers creating streaming server products based
on five different operating systems -- Mac OS X, FreeBSD, Linux, Solaris
and now Windows NT.

Availability and Pricing

Darwin 1.0 is available for immediate download at www.apple.com/darwin. The
CD set will be available from the Apple Developer Connection website,
www.apple.com/developer, for US$20. Darwin Streaming Server will be
available in May.

Apple ignited the personal computer revolution in the 1970s with the Apple
II and reinvented the personal computer in the 1980s with the Macintosh.
Apple is committed to bringing the best personal computing experience to
students, educators, creative professionals and consumers around the world
through its innovative hardware, software and Internet offerings.