ADW.Launcher replaces the existing Android drawer. The drawer is the icon at the bottom of the screen you click to see all your apps. ADW.Launcher is a great piece of software. There are tons of options and rarely a bug. It’s wildly popular in the Android community, especially among developers.
It allows you to have up to 9 home pages, 4 shortcuts on the drawer (a ‘secret’ dock-bar can hold even more shortcuts). With version 1.0, there are even some great looking themes, some of which cost a $1 (ADW.Launcher is free). Well worth it. Highly recommended.
Some manufacturers already customize the drawer heavily so this application may not make sense in those scenarios.