Link

SDDM

SDDM
GitHub / sddm / sddm
GitHub / KDE / sddm-kcm

SDDM / Themes

SDDM / Themes
KDE Store / SDDM Login Themes

Wiki

Wiki
SDDM

Arch Wiki

Arch Wiki
SDDM

Debian Wiki

Debian Wiki
SDDM
DisplayManager

Just the Docs