Mac users seem to fall into two basic groups. Those who tinker. Those who do not. I tinker. For those more inclined to tinker the Mac has a few dozen apps which perform a number of system tasks which range from optimization, to maintenance, to opening up secret options.
One of the more popular apps is the TinkerTool System. It’s an entire collection of utilities, a smorgasbord of tools and options that do some of what OS X does automatically, and much that OS X doesn’t do at all.
Run TinkerTool System on your Mac and you get a list of maintenance, operations, system settings, and user settings.
TinkerTool System gives you quick access to most of the Mac’s built-in maintenance features (those that run automatically or within the Terminal’s command line interface).
For example, there’s built-in browser privacy protections options, a cookie manager for Safari, app uninstaller, and single user mode troubleshooting tools.
It’s very simple in TinkerTool System to open the dozens of hidden preference settings in OS X (not available from System Preferences), such as making files invisible (or visible), remove language support files you don’t need to free up storage space, or even edit the Mac’s dictionary.
If you’d rather not tinker so deeply on your Mac, the same developer has the free TinkerTool app which opens many of Apple’s hidden preference settings (but only for the current user).