UltraHide - Version 4.0 UltraHide is the software which can immediately hide window (s) without closing them; and can instantly display them at the proper time. It can hide any application program or window (for example, the browser window). UltraHide is designed to make it possible to safeguard your personal privacy when your computer is used by some other users or when you are in an open working environment. For instance, you will not expect someone to be appearing in front of your computer when you are checking your private letters; under such circumstances, however, you can instantly hide your mails by pressing a self-defined hotkey or clicking your mouse. Also you can display them with a self-defined hotkey when there is no other one around.