Open source describes practices in production and development that promote access to the end product's sources. Some consider it as a philosophy, and others consider it as a pragmatic methodology. Before open source became widely adopted, developers and producers used a variety of phrases to describe the concept; the term open source gained popularity with the rise of the Internet and its enabling of diverse production models, communication paths, and interactive communities.The complexity of such communication relates to Brooks' law, and it is also described by Eric S. Raymond, "Brooks predicts that as your number of programmers N rises, work performed scales as N but complexity and vulnerability to bugs rises as N-squared. N-squared tracks the number of communications paths (and potential code interfaces) between developers' code bases." -- "The Revenge of the Hackers". 2000. Subsequently, open source software became the most prominent face of open source.
The open source model can allow for the concurrent use of different agendas and approaches in production, in contrast with more centralized models of development such as those typically used in commercial software companies.Raymond, Eric S. The Cathedral and the Bazaar. ed 3.0. 2000.
Open Source
Open Source :: Operating Systems

Open Source - The UNIX Open Source category of Mac OS X Downloads.
Meta Description: [ The UNIX & Open Source category of Mac OS X Downloads. ]
Calxalot Software - Open source freeware for Mac OS X.
DarwinPorts - Goal is to provide an easy way to install various open-source software products on a Darwin, Mac OS X, FreeBSD, or Linux system.
FinkCommander - A graphical user interface for Fink. (only for Jaguar, as of version 0.5.0)
HandBrake - A GPL'd multi-platform, multithreaded DVD to MPEG-4 ripper/converter. HandBrake was originally available on the BeOS, but now has been ported over to MacOS X and to GNU/Linux.
LAMP - An ambitious project to provide a POSIX environment on Mac OS.
Mac OS Open Source Software Directory - A resource to the Mac user and developer communities providing links to and information about open source software projects developed for the MacOS.
Mac OS X Man Pages - Apple's collection of man pages available from the command line, but much easier to browse.
MacDevCenter - Mac development tutorials, opinion, and discussion from the O'Reilly Network.
Meta Description: [ The O'Reilly Network's Macintosh and OSX DevCenter offers comprehensive Macintosh developer information and resources. O'Reilly Network's Macintosh DevCenter features original articles, news and commentary. ]
ONLamp - O'Reilly's articles on LAMP: The Open Source Web Platform. Roughly defined as (but not limited to) MySQL used in conjunction with Linux, Apache, and either Perl, Python, or PHP.
Meta Description: [ Welcome to ONLamp.com, the high performance web development site from the O'Reilly Network offering comprehensive Lamp developer information and resources. O'Reilly Network's ONLamp site features original articles, news and commentary. ]
Red Bird Island - Free software for the Mac of various genres.
Meta Description: [ Red Bird Island is Gordon Worley's corner of the Web, with links to lots of things he has done and does. ]
The Fink Project - Unix software ported to Mac OS X, either as binaries, or from source.
Meta Description: [ The Fink Team wants to bring the full world of Unix Open Source software to Darwin and Mac OS X. We modify Unix software so that it compiles and runs on Mac OS X and make it available for download as a coherent distribution, Fink, a distribution of Unix software for Mac OS X and Darwin ]
The Mac GNU OS X Public Archive - Packages of all forms of Open Source Software including many Unix applications ported to or built for OS X.
Meta Description: [ Free Open Source software for MAC OS X and Darwin ]
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