How Mouse Flip3D works is very simple: after installing it, you'll only have to maintain the left mouse button pressed and to click on the right button. The Flip3D mode will automatically appear, and each time you press the right button the active window will change. This window control can come in very handy if you have many windows open at the same time.
Mouse Flip3D works in invisible mode. You'll only see a small icon in the right corner of the status bar. From this icon you will be able to pause the application or leave it.
Try out Mouse Flip3D and you'll see that you soon won't be able to stop using this control method to change from one window to another.