If you are a git user and an OS X user, then you probably have realized that gitk, while being freaking awesome in Linux, does not have an intuitive native interface for OS X users. For instance, I can scroll by using two fingers on the touchpad, but gitk has Tk scrollbars, which knows nothing of this wonderful behavior. GitX has this and lots more, like a nice GUI commit interface (if you are into that.) It is also on github.
