what is x11 used for
Level 5 (7,090 points). X11 is a windowing system found on unix and linux systems. Since Apple includes X11 with OS X, and OS X is unix, one can run programs developed for unix/linux on OS X by using X11.Level 9 (65,110 points). X11 is a windowing system, as described here in Wikipedia:http://en.wikipedia.org/wiki/X11.any of the open source software available for Linux and other Unix like operating systems has been recompiled for Mac OS X's use since it has the ability to operate X11 which is a common windowing system across many of the Unix like operating systems.