XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running the 
X11 Window System. The first version was released in 1992. In 2006, it was ported to 
macOS 10.4.
OnX11 systems, XScreenSaver is two things: it is both a large collection of screen savers; and it is also the framework for blanking and locking the screen.
OnmacOS systems, these screen savers work with the usual macOS screen saving framework (http://alternativeto.net/software/x11/ is not required).
X11 Window System. The first version was released in 1992. In 2006, it was ported to 
macOS 10.4.On
X11 systems, XScreenSaver is two things: it is both a large collection of screen savers; and it is also the framework for blanking and locking the screen.On
macOS systems, these screen savers work with the usual macOS screen saving framework (http://alternativeto.net/software/x11/ is not required).Recent user activities on XScreenSaver
johnjstarr edited XScreenSaver
I really like the screensavers it has, especially the matrix :D