CThruView Transparent Image Viewer
CThruView is a free transparent image viewer that allows mouse clicks to go through the image. This makes your image see through and click through, so use it as tracing paper, splash screen or watermark. The image can be made opaque or semi-transparent, flipped, rotated, zoomed (scaled up or down), always on top, clipped, moved, hidden and centered. You can also save your session to a text file and restore your view settings later.