There are two projects which provide ports from open source packages to mac os x :
The fink project - wants to bring the full world of Unix Open Source software to Darwin and Mac OS X.
The DarwinPorts Project's - their main goal is to provide an easy way to install various open-source software products on a Darwin, Mac OS X, FreeBSD, or Linux system.
adding an extra column is not a bad idea but might become too bulky. Check the link above the table in WinLinuxWin to see what i mean
-- SiteAdmin? - 21 Dec 2004
Also I'm thinking you might like to add another column to the WinLinuxWin page for OS X...