Window Magician Description:

This program can hide windows, icons in the system tray, shut down applications or run your screensaver by pressing one hotkey. Then you can also restore the previous state of your screen.

If you leave you computer unattended, Window Magician can perform such actions by timeout and saves your information from the evil-wisher's view.

You can add the applications from the running processes or file on the disk to be hidden and change their behavior: to shut down, to hide their windows, to hide their system tray icons.