Plwm – An X11 window manager written in Prolog

Already exists: https://github.com/mwitmer/guile-wm

There might also be ones in other Schemes, but as FFI hasn't been standardised across Schemes yet I doubt there's an implementation-agnostic one.

Here's an X11 window manager, with pie menus and tabbed windows, entirely written in object oriented NeWS PostScript, from around 1991:

https://donhopkins.com/home/archive/NeWS/owm.ps.txt

And some design notes and emails on that NeWS based window manager for X11 windows:

https://donhopkins.com/home/archive/NeWS/i39l.txt

It incorporated NeWS tabbed windows written in PostScript, which could wrap around X11 windows (and frame NeWS windows too of course):

https://donhopkins.com/home/archive/NeWS/win/tab.ps

And NeWS pie menus written in PostScript, which you could pop up on tabbed window frames and manage X11 windows (and use in NeWS apps too of course):

https://donhopkins.com/home/archive/NeWS/win/pie.ps

There was also a virtual large scrolling desktop, and virtual multi-screen "rooms", both purely written in PostScript, which all plugged together with the tabbed windows and pie menus and X window manager seamlessly. They were all independent of each other and could be used separately, but worked together synergistically. Take that, ICCCM! ;)

Also here's a (pre-ICCCM, pre-X11) X10 window manager with pie menus, written in C and scripted in Forth, from around 1986:

https://donhopkins.com/home/archive/piemenu/uwm/fuwm-main.f

And some of my thoughts on X-Windows and ICCCM window management in general:

https://donhopkins.medium.com/the-x-windows-disaster-128d398...

>In summary, ICCCM is a technological disaster: a toxic waste dump of broken protocols, backward compatibility nightmares, complex nonsolutions to obsolete nonproblems, a twisted mass of scabs and scar tissue intended to cover up the moral and intellectual depravity of the industry’s standard naked emperor.

>Using these toolkits is like trying to make a bookshelf out of mashed potatoes." -Jamie Zawinski

I'm hoping one day someone will write a window-manager service for Wayland that replaces the compositor API with a protocol. To once again enable window managers to be implemented in any language, regardless of it having a Wayland/compositor library.

I wish more things were protocols instead of APIs.

This one is customizable in Lisp, and overall pretty neat: https://sawfish.tuxfamily.org/ - I have been happily using it daily for many years now. :-)