Sticky Previews is a lightweight productivity tool that lets you create live previews of any window or a screen region of your choice. It keeps previews above all other applications like a sticky-note thus allowing you to monitor any background window in real time no matter which application you're working with at the moment. In its behavior Sticky Previews is very similar to picture-in-picture TV technology, but intended for Microsoft Windows and desktop applications.
Sticky Previews can work as a screen magnifying glass. The magnifier window is a must-have instrument in almost any graphical work. In Sticky Previews the magnifier can work both ways: zoom in and zoom out. Zoom in a preview window to see small details of some area in a picture.