Funny thing is that the original Xerox UI would tile by default (but the windows were floating). Similarly Windows 1.0 were all tiles.

And to some degree Windows 10 has gone back to tiling.

You can drag windows top corners and the left and right edges to have the take up a fixed part of the screen. Sadly only when using the left/right split will Windows try to auto-resize the opposite window in response to you actions.