See Through Windows lives in the system tray and provides you with hotkeys to make any window transparent (both the hotkey and the transparency level are configurable), minimize or maximize windows, and send them to another monitor.
WHAT’S NEW IN VERSION 1.0.5
How to Register Software With a Registration Code?
-Double-click the desktop shortcut to launch the .exe file.
-Enter your name and the .exe Registration Code precisely as they appear on your registration acknowledgement email when the registration reminder window appears.
-Press Register. Enter all additional details exactly as they are listed on your registration confirmation email, including your .exe serial number.