Mac Expos? is a feature of Apple’s Mac OS X that allows you instantly access any open window with a single keystroke. It can display all open windows as thumbnails, view windows of the current application or hide all windows to quickly locate a file on your desktop. WinExpos? is such a freeware software (arouns 200KB) that provides such a feature for Windows 2000/XP and Vista along with animations. When you a hotkey that you’ve selected, all open Windows are thumbnailed and displayed. You can then focus on a window by hovering your mouse on its thumbnail and also set exceptions for programs you don’t want to Expos?.
A noteworthy feature is the activity of each window is displayed real time so that you can decide whether to switch or not.