Don't be confused by DarwinPorts.com. The original DarwinPorts project was renamed to MacPorts a long time ago.
Besides Fink, yet another distributor of open source packages for OS X has arisen in the mean time: Homebrew. Each of the three has its strengths depending on your preferences. None of them currently provide an up-to-date set of binary packages, so whichever you choose, you'll end having to spend time compiling. In my opinion, MacPorts
is probably the most actively maintained these days and has at least unofficial support from Apple but Homebrew
has been gaining in popularity for its minimalist approach.