Requirements: G3 or faster Mac, Mac OS X 10.2 or later
We loved Kaleidoscope—the way cool tweaking program that let you alter the look of practically every interface element—but since leaving it behind with Mac OS 9, we’ve come to discover OS X’s theme architecture. Duality lets you easily swap out themes using a smart resource parser, allowing you to upgrade themes on the fly. Use it to change the look of your windows, menus, Dock, icons, cursors, boot screen, and more. The app supports XScheme, .dlta, .theme, and .iconset theme formats.
Requirements: G3 or faster Mac, Mac OS X 10.0 or later
Sick of all the standard screen effects that Apple provides with OS X? Here’s a nice collection to save you from eyeball boredom burnout. This pack contains more than a dozen screen savers. Our personal fave: iX Xirtam (all you Matrix fans might want to check this one out).