X Window System

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X Window System

(operating system, graphics)
A specification for device-independent windowing operations on bitmap display devices, developed initially by MIT's Project Athena and now a de facto standard supported by the X Consortium. X was named after an earlier window system called "W". It is a window system called "X", not a system called "X Windows".

X uses a client-server protocol, the X protocol. The server is the computer or X terminal with the screen, keyboard, mouse and server program and the clients are application programs. Clients may run on the same computer as the server or on a different computer, communicating over Ethernet via TCP/IP protocols. This is confusing because X clients often run on what people usually think of as their server (e.g. a file server) but in X, it is the screen and keyboard etc. which is being "served out" to the applications.

X is used on many Unix systems. It has also been described as over-sized, over-featured, over-engineered and incredibly over-complicated. X11R6 (version 11, release 6) was released in May 1994.


See also Andrew project, PEX, VNC, XFree86.

Usenet newsgroups: news:comp.windows.x, news:comp.x, news:comp.windows.x.apps, news:comp.windows.x.intrinsics, news:comp.windows.x.announce, news:comp.sources.x, news:comp.windows.x.motif, news:comp.windows.x.pex.
References in periodicals archive ?
X11 Compatible Chassis -- CSE-510-203B, CSE-512-260B, CSE-514-R400C, CSE-813MFTQ, CSE-113MTQ, CSE-731D-300B, CSE-116AC2, CSE-213AC, CSE-514-R400W, CSE-515-505, CSE-116AC2/TQ-R706WB, CSE-825TQ-R500WB, CSE-113MTQ, CSE-825TQC-R740LPB
Supermicro's new X11 UP workstations, long-life embedded systems and motherboards integrate the latest technologies such as USB 3.
X Windows-based applications require an X11 server to interface with the Windows graphical desktop user interface.
Customers electing X11 solutions, which do not support ICA and are optimized for LAN deployment, now can implement UNIX Integration Services to provide LAN access to Windows applications running on Citrix MetaFrame and WinFrame.
iLIVEx Pro buyers also receive a 6-month trial license for StarNet's X11 desktop clients for Windows, Linux and Macintosh workstations.
This feature-rich and scaleable application is fully integrated into Xelerated's "Dataflow Architecture" and is supported across the entire X11 product family.
This takes remote X11 desktop access to a new level of mobility and significantly enhances end-user productivity," said Steven Schoch, StarNet co-founder and CEO.
Combining the Mac's own X11 application with StarNet's proven LIVE connection technology, MacLIVE allows users to easily and securely display desktops and applications running on remote Unix and Linux servers onto their Macintosh computer.
STOCKHOLM -- Xelerated, the global leader in field-proven Carrier Ethernet ASSP-based chipsets, today announced that Hutchison Optel has chosen the X11 Network Processor Unit (NPU) for deployment in its Mss family of PTN products.
Xelerated's X11 network processor has been chosen for feature-rich, high-performance line cards in Fujitsu's next-generation Metro systems.
STOCKHOLM -- Xelerated, the global leader in field-proven Carrier Ethernet ASSP-based chipsets, today announced that ADVA Optical Networking has deployed its X11 network processor unit (NPU) in the ADVA FSP 3000 Wavelength Division Multiplexing (WDM) system.
SANTA CLARA, California, December 22 /PRNewswire/ -- Xelerated, the price/performance leader in network processing, today announced that its Xelerator(TM) X11 network processor has been selected by Huawei Technologies for the next-generation packet-based multi-service products for Metro networks.