MacPorts Project's main goal is to provide an easy way to install various open-source software products on the Darwin OS family (OpenDarwin, Mac OS X and Darwin)
JAZZYGUY The most important application and the most necessary on the Mac. Without this it would be impossible to get the free games, and innovative stuff like "Figlet" and kStars which BTW beats all shareware and freeware astronomy apps available including Stellarium and other apps. It was great that it is now NATIVELY ported to 10.5 and runs great! (Version 1.7.0)
GAOSHAN The package manager formerly known as DarwinPorts is the best thing out there for easy installation, compiling and management of all sorts of unix based stuff.
Super app! Better than Fink, in my opinion, as it seems to have more up to date packages, in general. (Version 1.3.2)