|Original author(s)||Keith Packard|
|Initial release||October 1988|
1.1.12 / March 2, 2019
|Written in||C, C++|
|Type||X display manager|
XDM (in full, the X Display Manager) is the default display manager for the X Window System. It is a bare-bones X display manager. It was introduced with X11 Release 3 in October 1988, to support the standalone X terminals that were just coming onto the market. It was written by Keith Packard.
Because of XDM's minimalism, most desktop environments tend to use later, more sophisticated display managers.