screen mirroing

Screen Screw does just that, it screws with your screen.

screen-scraper is a tool for extracting data from websites.

screen-scraper mines data from web pages and is fully scriptable.

Screen Shrink is a utility to assist PDA, mobile phone and iPhone developers.

Screen Saver for game "Adventures of Tuber: Map of Treasures"

Screen Saver for game "Tuber vs Solanars: Strategy"

Screen Launcher lets you choose any program to run as a screensaver.

Not a screen saver but a program that generates stand-alone screen savers

One click grab of any screen

Draw anything on screen with mouse.