All IRIX releases from 4.0 to 6.5.30 utilized X11 (Xsgi) and SGI's modified Motif window manager 4Dwm.
It allows multiple users to log into a single computer running Mac OS X using the RDP, VNC or X11 protocols.
The library allows developers an alternative to a full X Window System (X11) server used in Unix-like operating systems.
Another significant Convergence development is DirectFB, a thin library that provides hardware graphics acceleration and windowing features for Gtk+-based and other graphical Linux applications without the use of an X11 server, and which its developers claim "adds graphical power to embedded systems".
Later versions upgraded the X11 server to release 4, and was certified to conform to the X/Open Portability Guide 3 Base profile.
This enables you to develop GUI applications that can run on Windows 95/98/Me/NT/2000/XP/CE, Linux, FreeBSD, SOLARIS, Mac OS X (w/X11), BTRON, T-Engine, mu-CLinux (wo/X11) in various programming languages such as C/C++, Java, Perl, Ruby, Python, OCaml.
Programs such as OpenOffice.org use XDarwin to run in the X11 windowing environment, either in a rootless or full-screen mode.