Xdmx is a proxy X server that uses one or more other X servers as its display device(s). It provides multi-head X functionality for displays that might be located on different machines. Xdmx functions as a front-end X server that acts as a proxy to a set of back-end X servers. All of the visible rendering is passed to the back-end X servers. Clients connect to the Xdmx front-end, and everything appears as it would in a regular multi-head configuration. If Xinerama is enabled (e.g., with +xinerama on the command line), the clients see a single large screen.
More information about X.Org can be found at:
This package is built from the X.org xserver module.