GitX is a git GUI specifically for Mac OS X. It currently features a history viewer much like gitk and a commit GUI like git gui. But then in silky smooth OS X style!
BROZ This is a nice tool, but there's a bug in this and the previous version that keep me from upgrading.
The "Commit" button (looks like an arrow pointing to the right with a bar in front) that appears in the window header is always disabled. Since it's pretty important to be able to do the the things that button enables, this bug is a deal killer.
Once again, I'll revert back to 0.6.1 and do my work. (Version 0.6.3)
MARK EVERITT This makes day to day use of git extremely pleasant. On the back of this I recommend git as my VCS of choice simply because it -just works-. (Version 0.6.3)