He found the kitten under his bed, next to the overturned ratpoison tray that was not supposed to be there.

Unlike other tiling window managers like Ion, ratpoison completely ignores the mouse, and avoids window decorations as much as possible.

Ratpoison is written in C and StumpWM re-implements a similar window manager in Common lisp.

It was originally written by Shawn Betts, the primary author of keyboard-driven ratpoison and Stumpwm tiling window managers.

Ratpoison - A keyboard-driven GNU Screen for X.

Stumpwm is a window manager intended as a successor to ratpoison, created when Betts found ratpoison growing increasingly large and "lispy".

Ratpoison and StumpWM are tiling window managers for the X Window System primarily developed by Shawn Betts.

Tiling window managers include awesome, dwm, ion, larswm, ratpoison, Stumpwm, wmii, i3, xmonad, and XWEM.

As explained on the StumpWM wiki, the developers decided to largely reimplement ratpoison in Common Lisp's CLX:

Blackbox, Fluxbox, Openbox, Ratpoison, Ion and wmii require users to edit configuration files by hand to configure virtually every aspect of the desktop environment and are hence highly configurable.

Since the first release of Ion in the summer 2000, similar alternative window management ideas have begun to show in other new window managers: Larswm, ratpoison, StumpWM, wmii, xmonad and awesome.

There are six editions of Salix; Xfce, LXDE, Fluxbox, KDE, MATE and Ratpoison editions, each of which features the respective desktop environment.

Exceptions to that rule are awesome, dwm, PLWM, ratpoison and xmonad, due to a lack of any typical window decorations used by these window managers, and also Compiz which drew the decorations separately up until version 0.9.0, where it became a re-parenting window manager to allow it to run in a non-composited mode.

Its intended successor is Stumpwm; ratpoison was growing increasingly software bloat, and Betts decided to largely reimplement its functionality in Common Lisp."StumpWM grew out of the authors' frustration with writing ratpoison in C. Very quickly we realized we were building into ratpoison lispy-emacs style paradigms.