Docks are very good for easy navigation through GUI. They offer a lot of functionality and are light weight components. Free Dock Spaces is a software for MAC OS that is an alternative for existing MAC Dock software. Dock Spaces makes it too easy to configure and switch between docks. It has beautiful GUI and doesn't consume high system resources. The transparency levels can be customized and 2D and 3D icons can also be selected. Download it free on Funrocker.com. Download FREE Dock Spaces Software