NightShift

Now that you have cleared up some room on your hard drive, why not clutter it up with some nightly WebKit builds? What's WebKit? Why, it is the HTML engine that makes Safari work, and that is baked into OS X. It has an active developer community that issues nightly builds, for those that want to be on the cutting edge.

I know what you're thinking, 'But I don't want to have to go to the WebKit site and FTP a new build every night.' That's where NightShift comes it. This little application will automatically download the latest build of WebKit and place it in your Applications folder (or wherever you want it to place it).

NightShift is donationware, so chip in a few bucks if you find yourself using it all the time.