It is integrated in the upstream source code of the XFree86 and Xorg servers, where it is maintained.

Originally, XDarwin required an X window manager to run.

More recent versions of XDarwin can also run in rootless mode, which is to say that it integrates with the native window manager instead of requiring such a program specifically for X.

Programs such as OpenOffice.org use XDarwin to run in the X11 windowing environment, either in a rootless or full-screen mode.

A version of the program was created for Mac OS X Panther or higher that runs in the native Aqua interface.