GNOME Display Manager (GDM) is a display manager (a graphical login program) for the windowing systems X11 and Wayland.
Keith Packard (born April 16, 1963) is a software developer, best known for his work on the X Window System.
This is a list of computing and IT acronyms and abbreviations.
Simple Login Manager (SLiM) is a graphical display manager for the X Window System that can be run independently of any window manager or desktop environment.
In the X Window System, an X display manager is a graphical login manager which starts a session on an X server from the same or another computer.
The X Window System (X11, or shortened to simply X) is a windowing system for bitmap displays, common on UNIX-like computer operating systems.
In computing, the X Window System (commonly: X11, or X) is a network-transparent windowing system for bitmap displays.
XDM or xdm or similar can refer to.