Apple’s Darwin team has released the Darwin 6.5 source code, which is designed to work with the just released Mac OS X 10.2.5 and includes a large number of source projects.
Darwin, the core operating system of Mac OS X, is one of Apple’s open source projects. Open source is a term for the historical development model used by the Internet community to facilitate distributed development of complex, high-quality software. Darwin is a version of the BSD UNIX operating system that offers advanced networking, services such as the Apache Web server, and support for both Mac and UNIX file systems.
Apple says its releases of Darwin will focus primarily on supporting Mac OS X. However, they “also expect that other people will use Darwin to customize Mac OS X to meet their specific needs, adding platforms or features that are not a priority for Apple.”