There's a project called Fink http://fink.sourceforge.net/index.php Here's their descriptive blurb.
"The Fink project 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 ("port" it) and make it available for download as a coherent distribution. Fink uses Debian tools like dpkg and apt-get to provide powerful binary package management. You can choose whether you want to download precompiled binary packages or build everything from source. " Apparently Fink has a GUI front end http://finkcommander.sourceforge.net/index.php Having said all that, I don't use OSX anymore. Even with a 384 MB RAM and a G3 processor the gui is very slugish. Rather stick to Linux :) and OS 9. Mathisha