i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Ly - TUI (ncurses-like) display manager
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
LightDM - A lightweight display manager
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
SDDM - QML based X11 and Wayland display manager. Contribute to sddm/sddm development by creating an account on GitHub.