Simple Desktop Display Manager

Simple Desktop Display Manager (SDDM) is a display manager (a graphical login program) for the X11 and Wayland windowing systems.^[5] SDDM was written from scratch in C++11 and supports theming via QML.^[6]

Simple Desktop Display Manager

Original author(s)	Abdurrahman Avci
Developer(s)	Abdurrahman Avci, KDE, LXQt, Liri[1]
Initial release	19 March 2013; 12 years ago (2013-03-19)[2]
Stable release	0.21.0[3]  / 26 February 2024; 14 months ago (26 February 2024)
Repository	github.com/sddm/sddm
Written in	C++, QML
Platform	Unix-like
Type	X display manager
License	GPL-2.0-or-later[4]
Website	github.com/sddm/sddm

SDDM is free and open-source software subject to the terms of the GNU General Public License version 2 or later.^[4]

Adoption

In 2013, Fedora KDE members decided to default to SDDM in Fedora 21.^[7]

KDE chose SDDM to be the successor of the KDE Display Manager for KDE Plasma 5.^[8][9]

The LXQt developers recommend SDDM as a display manager.^[10]

See also

• Free and open-source software portal

• LightDM, Light display manager, formerly written for Ubuntu, now independent
• GDM, the default graphical login program for GNOME