Ly - TUI (ncurses-like) display manager
LightDM - A lightweight display manager
SDDM - QML based X11 and Wayland display manager. Contribute to sddm/sddm development by creating an account on GitHub.
CDM - Console Display Manager. Contribute to evertiro/cdm development by creating an account on GitHub.
Console TDM - a login-manager-like desktop session selector written in bash (original source tree, now forked by dopsi https://github.com/dopsi/console-tdm) - mytbk/console-tdm
Entrance - Display manager for Enlightenment.