Install sawfish by entering the following commands in the terminal:
sudo apt update sudo apt install sawfish
Description:
window manager for X11
Sawfish is an extensible window manager using an Emacs Lisp-like scripting language. All window decorations are configurable, the basic idea is to have as much user-interface policy as possible controlled through the Lisp language.
Homepage: http://sawfish.tuxfamily.org/
Version: 1:1.11.90-1.1
Section: universe/x11