Linux Kernel

[XFree86] Re: Framebuffer server : "Xvfb (virtual framebuffer server) is an X server that does not use a video display. It uses system memory to simulate a video card. It is useful for testing purposes, or for running applications which require an X server but which you do not really need a display and might not have video hardware. For example, you can run realplayer in Xvfb to be able to play real audio files from the commandline. There is no video display though, it is just faked in system memory."