From Mac Guides
OpenDarwin is a freely available, multi-platform Berkeley Software Distribution (BSD) / Mach 3.0 kernel-based UNIX-like operating system.
The goal of the OpenDarwin project, founded in April 2002, is to create an independent branch of the Darwin operating system that increases collaboration between Apple developers and the open source community. Apple benefits from the project because development in OpenDarwin is often incorporated into Darwin releases; and the open source community benefits since it is given complete control over its own operating system.
The mascot of OpenDarwin is Hexley the platypus.
Development and distribution
The OpenDarwin developers use a version control system called Concurrent Versions System (CVS to manage changes to the OpenDarwin source code. Many of the OpenDarwin developers are Apple employees, whereas others are not. It should be noted that the OpenDarwin project is fully independant of Apple, and has complete control over it's own code, though they generally try to stay compatible with Apple's own software.
Like most modern operating systems, OpenDarwin employs a built-in kernel debugger to help the developers find kernel bugs.
The current version
OpenDarwin 8.2 corresponds to Mac OS X v10.4.2.
- OpenDarwin community development site
- DarwinPorts project
- OpenDarwin's Bugzillla database
- Hexley, the Darwin mascot
- irc.freenode.net #opendarwin