app that display the screen underneath?

Hi,

Does anyone know there's an old app that enable me to right mouse click
to open a small hole to display the screen underneath? I forgot about
its name.
Any download link?

Many thanks,
NG

http://www.progency.com/peepshowlite.html - Peep Show Lite - "Allows
you to create holes in any window. Create different shaped holes, more
than one hole per window, and more. Works for Win95/98/NT as opposed to
Peep Show which was just Win95/NT compatible"

http://www.progency.com/peepshow.html - Peep Show version 1.0 - "5
features, including hole cutting (not Win98 compatible), easy document
scrolling, turning any application's main menu into an easy access pop
up menu, and more! FREEWARE!"