LightDM - A lightweight display manager
CDM - Console Display Manager. Contribute to evertiro/cdm development by creating an account on GitHub.
SDDM - QML based X11 and Wayland display manager. Contribute to sddm/sddm development by creating an account on GitHub.
Entrance - Display manager for Enlightenment.
Ly - TUI (ncurses-like) display manager
GDM - Electronics