I did a search and couldn't find any request for this, so I thought I would put one out there and see what happens.
discription: Make a window roll into its title bar, send it to the back or make it stay on top. Minimize, maximize or close all visible windows, including minimizing to the tray area. Make a window translucent on Windows 2000 or above.
It's written in assembly and according to the website it's open source