When you open an application in Windows, you wouldn’t be able to see the underlying windows or the background unless you minimize it. But with See Through Windows, it’ll be a lot easier to know what’s happening beneath the current window.
See Through Windows is a simple freeware application that makes the current windows transparent, allowing you to see through it. After the installation, you can see its blueish sunglass icon sitting in the system tray. By default, the hotkey combination to enable See Through Windows is CTRL + SHIFT + Z, but you can easily change it from the Options. Just right-click on the icon and click Options.
From the Options window, you can change the transparency level and the hotkey combination.
When you want to see the underlying window/s, just press the hotkey combination. It will then make the foreground window transparent and turns it back to opaque when you press the hotkey again.
With See Through Windows, you can easily see what’s happening beneath the current window without the need to minimize it.