XFree86, a freely redistributable open-source implementation of the X Window System that runs on UNIX(R) and UNIX-like (like Linux, the BSDs, Mac OS X (aka Darwin) and Solaris x86 series) operatingsystems and OS/2. XFree86 is the underlying software that is between the hardware and graphical user interface (aka gui) that people see and use. If you are using KDE, GNOME, Enlightenment, Blackbox, AfterStep, twm or fvwm then you are already using and running XFree86 as these run as our clients.
Whats New in this Version
-Mac OS X 10.2 (Jaguar) compatible rebuild . Follow the link and
free download XFree86 4.2-10.2 now.
DETAILS