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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.

A screenshot of an XDM login screen
A screenshot of an XDM login screen
Original author(s)Keith Packard
Developer(s)X.Org Foundation
Initial releaseOctober 1988; 30 years ago (1988-10)
Stable release
1.1.12 / March 2, 2019; 6 months ago (2019-03-02)[1]
Repository Edit this at Wikidata
Written inC, C++
TypeX display manager
LicenseMIT License

Because of XDM's minimalism, most desktop environments tend to use later, more sophisticated display managers.

See alsoEdit


  1. ^ Coopersmith, Alan (2019-03-02). "xdm 1.1.12". xorg-announce. Retrieved 2019-03-03.
  • Mui, Linda & Pearce, Eric (July 1993). X Window System Volume 8: X Window System Administrator's Guide for X11 Release 4 and Release 5 (softcover) (3rd ed.). O'Reilly and Associates. ISBN 0-937175-83-8.
  • "XDM(1) manual page". X.Org.

External linksEdit