X.Org

The X.Org Foundation provides an open source implementation of the X Window System. In continuous use for over 20 years, the X Window System provides the only standard platform-independent networked graphical window system bridging the heterogeneous platforms in today's enterprise: from network servers to desktops, thin clients, laptops, embedded systems, and hand-helds, independent of operating system and hardware.

X11R7.2 supports Linux, BSD, Solaris, Microsoft Windows and GNU Hurd systems. It incorporates significant stability and correctness fixes, including improved autoconfiguration heuristics, enhanced support for GL-based compositing managers such as Compiz and Beryl, and improved support for PCI systems with multiple domains. It also incorporates the new, more extensible XACE security policy framework.