X Window System
| X Window System | |
|---|---|
 | |
 twm, the default X11 window manager | |
| Original author | Project Athena |
| Developer | X.Org Foundation |
| Release | 19 June 1984 |
| Stable release | X11R7.7 
/ 6 June 2012 |
| Operating system | Unix, Unix-like, MVS OpenVMS, DOS |
| Platform | Cross-platform |
| Predecessor | W Window System |
| Type | Windowing system |
| License | MIT License |
| Website | x |
| Repository | |
The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X originated as part of Project Athena at Massachusetts Institute of Technology (MIT) in 1984. The X protocol has been at version 11 (hence "X11") since September 1987. The X.Org Foundation leads the X project, with the current reference implementation, X.Org Server, available as free and open-source software under the MIT License and similar permissive licenses.