That's a really fringe window manager.
Not a desktop environment like the others.
I believe ratpoison is the granddaddy of today's tiling desktops, which have a decent following.
I know. I'm using i3 as I write, bit no desktop environment.
But I suppose it could go either way - ratpoison itself didn't have a very large user base, but it spawned a decent one if you count its successors.
Agree. Ratpoison itself was barely usable.
I believe ratpoison is the granddaddy of today's tiling desktops, which have a decent following.