Back in the early days of the X Window System, X10 era, there was a window manager that tried to emulate the Andrew System’s original tiled window interface, which tiled windows based on constraint solving.
Andrew moved to a simpler layout algorithm and there is a later X window manager also called “Andrew somethingorother” that uses this simplified algorithm.
But the original X WM. I saw it on a tape, source and all, years ago, and now I can’t find it.