XScreenSaver
XScreenSaver is a screensaver program for
Unix-like operating systems running the
X Window System. It is maintained by
Jamie Zawinski.
Open source Unix-like systems such as
Linux use it almost universally.
One reason for XScreenSaver's tremendous popularity is the ease of adding extra modules - "Any X program that can draw on the root window can be used with xscreensaver." [home page]
External links: