Peek Through

Peek Through screenshots

Peek Through makes the foreground window transparent with the press of Hot Keys
Main window
Peek Through 1.1 : Main window

Alternative downloads

Actual Title Buttons
8.9
A utility that provides extra buttons for Windows title bar.
Glass2K
0.9.2
FREE
Allows Windows 2000/XP users to make any window transparent.
Peek Traffic TOPS
3.7.12
FREE
TOPS is the primary PC-based data processing tool for the ADR Plus data.