StumpWM is a tiling, keyboard driven X11 Window Manager written and scriptable in Common Lisp. StumpWM attempts to be customizable yet visually minimal. There are no window decorations, no icons, and no buttons.
Qtile Alternatives
Qtile is described as 'A full-featured, hackable tiling window manager written and configured in Python' and is a Window Manager in the os & utilities category. There are more than 50 alternatives to Qtile for a variety of platforms, including Linux, Wayland, BSD, Mac and X11 apps. The best Qtile alternative is Hyprland, which is both free and Open Source. Other great apps like Qtile are niri, i3, Sway and Openbox.