A utility for Windows that allows setting transparency for any open application. Drag the target to the program window you would like to set to be transparent. The transparency can be adjusted with the slider. The value on the slider indicates how transparent the window is: 0 for total transparency, 255 for complete opacity. Have fun with this handy utility.

Chaos Crystal can run from any location including removable devices such flash memory. Includes, application windows can now be selected through a dropdown menu.

Editor's review of Chaos Crystal

This single-function application provides a tool for adjusting the transparency of any window on your desktop, although you can only adjust the transparency of one window at a time.

Chaos Crystal has a simply-designed, straightforward interface that is easy to use. The program gathers all open windows into a drop-down list, so you can choose which window's transparency to adjust, or you can simply use the app's Crosshair button and drag it to the window of your choice. Transparency levels can easily be adjusted using the program's slider, while the changes are quickly applied on the specified window.

Unfortunately, unlike in similar applications, the program cannot apply the transparency adjustment to all windows at the same time, which would make the changes quicker. Although it seems to have a single functionality, this freeware does its job flawlessly, so any user may find it worth keeping.