XScreenSaver for Linux

XScreenSaver is an extensible screensaver and screen locker for Unix. Although most screensaver modules do not, some require an OpenGL toolkit such as the Mesa 3D Graphics Library, and others will look better if XPM is on your system. The graphical xscreensaver configuration program will look better with a Motif widget toolkit, such as the open source, free LessTif. Xscreensaver is covered under the open source, free BSD license.