Homebrew
Homebrew is the easiest and most flexible way to install the UNIX tools Apple didn’t include with OS X.
A very promising alternative to MacPorts. And, since Homebrew sensibly installs under /usr/local, you can give it a try without mucking up your existing MacPorts installations (though if you plan to switch, getting rid of MacPorts entirely seems like a good idea).
Thanks, Adam and @iferguson90.
