If you really want to customize things, you can download Mac Ports http://www.macports.org/ and install many of the same open source applications Linux users enjoy (because both mac and linux are Unix based).
You must have X11 installed
macdudeosx | Apr 30, 2010
Mac OS X Open Source
a short statement from the ccc 24c3 in berlin
Open source screen casting and audio capture on Mac OSX
Screen casting on OSX for free isn't that easy. So, I took it upon myself to figure out this little tid-bit of geeky goodness.. Enjoy! The ...
nexuiz promo video - open source fps fo osx, linux and windows
Official Demo of this great Open Source FPS (frag fest!). Better still, it runs on OSX, Linux and Windows - so it's THE Inclusive online ...
Installing Git on Mac OS X using Homebrew
A video showing a simple way to install the Git SCM on your Mac OS X box using Homebrew. This video also covers the installation of Homebrew as well.
Install Diaspora Open Source Ubuntu Mac
This video should get you up and running with Diaspora on Mac OS X and Ubuntu The steps are simple. Just copy and paste the code provided. The ...
osx open source - Bookshelf
744 pages
The Shellcoder's Handbook, Discovering and Exploiting Security Holes
Creator: Chris Anley, John Heasman, Felix Lindner, Gerardo Richarte | Computers - 2011-02-16
Aside from the unique “Aqua” UI theme, OS X has a Unix feel, due in no small
part to the large number of open source projects that are bundled as part of it
...
Publisher: Wiley
224 pages
Mac OS X for Unix Geeks
Creator: Brian Jepson, Ernest Rothman | Computers - 2011-08-09
If you bought the boxed version of Mac OS X 10.2 (Jaguar), the Developer Tools
... a better understanding of Unix for Mac OS X: Apple's Open Source Mailing ...
Publisher: O'Reilly Media, Inc.
395 pages
Mac OS X Tiger for Unix geeks
Creator: Brian Jepson, Ernest Eric Rothman | Computers - 2005
Also, some open source video applications have been ported to Mac OS X using
Aqua, rather than relying on X11. $ $ $ $ Open Source Video Players MPlayer ...
Publisher: O'Reilly Media, Inc.
640 pages
Beginning Mac OS X Snow Leopard Server: From Solo Install to Enterprise Integration
Creator: Charles S. Edge, Jr., Charles Edge, Chris Barker, Ehren Schwiebert | Computers - 2010-07-30
Mac OS X Server uses a healthy mixture of open source software and customized
Apple versions of those open source solutions. Many open source–based servers
...
Publisher: Springer
Digg Headlines
(2 diggs) Apple Mac OSX Freeware and Open Source List
Jan 03, 2010 from velkymx(Alan Bollinger)
Excellent and comprehensive list of free software that every Mac user should have bookmarked.
(4 diggs) Nexuiz - a free open-source FPS for Linux, Windows and OSX
Sep 16, 2008 from cenobite(Cal Harding)
A high-quality FPS that has been downloaded over 1.5 million times. Graphically it features HDR, blooming, and real-time dynamic shading, yet can run on a P3. Multiple game modes and excessive weapons and speed create an incredibly intense fast paced game with a strong community.
(6 diggs) Roomba-to-MIDI OSX open source software
May 09, 2006 from mikekuniavsky
"The Roomba has a piezo beeper that can play tunes. You've heard it.And its motors make noise. Why not put them under MIDI control?So here is RoombaMidi: a Mac OS X application that creates a virtual MIDI instrument for use by any Mac OS X MIDI sequencer, like Ableton Live, Logic, and so on."
(2 diggs) Nexuiz - Awesome, Free, Open Source FPS for Linux/OSX/XP
Feb 02, 2009 from coltsplayground(Colt Seavers)
At Playportal.net we're always looking for great multiplayer games to play with our mates.This gem runs on just about any machine, plays excellently, and is a great way to boost your game collection without spending hard earned. There's a large community behind it and lots of mods and maps. Come and join us at www.playportal.net for some games :)
(1257 diggs) Bean: Open Source & Lightweight OSX Word Processor
Jun 01, 2007 from rico_m(Rico Moran)
Bean is lean, fast, and uncluttered. If you get depressed at the thought of firing up MS Word or OpenOffice, try Bean. If you use Text Edit but have to jump through hoops just to get a word count or change the margins, try Bean. If you desire a simple, low-pressure writing environment, try Bean.