I cover a lot of defaults commands on this site. And I’m likely only going to be increasing that coverage. But there are a lot of developers out there that wrap these commands into little GUI applications. One such, and likely the most popular, is TinkerTool. TinkerTool is an application that gives you access to additional preference settings Apple has built into Mac OS X. This allows to activate hidden features in the operating system and in some of the applications delivered with the system.