Simple Desktop Display Manager (SDDM) is a display manager (a graphical login program) for the windowing systems X11 and Wayland. SDDM was written from scratch in C++11 and supports theming via QML.
SDDM is free and open-source software subject to the requirements of the GNU General Public License version two or later.
LXQt defaults to SDDM.
In 2013, Fedora KDE members decided to default to SDDM in Fedora 21.
Simple Desktop Display Manager was adopted as default graphical login program by Hawaii.
KDE chose SDDM to be the successor of the KDE Display Manager for KDE Plasma 5.
- getty – a non-graphical login program
- GDM – the default graphical login program of GNOME
- LightDM – the default graphical login program of Ubuntu