Hide Window Hotkey 3.1
"Hide Window Hotkey is a utility which allows you to hide the windows, and programs which are running on your screen. It will instantly hide or close all (or some) programs through Mouse Hotkey or Keyboard Hotkey.
It can protect the hidden windows with a password or quiet all sounds when hide program windows. Reorder and arrange the windows on taskbar based on your choice. Show window property of application."