Resize both windows when snapped together

It would be great if two snapped together windows could be resized simultaneously. This is how Ubuntu works these day. Example:

  • Snap window A to left side of screen
  • Snap window B to right side of screen
  • A and B now occupy half the screen each and have a "common" edge in the middle of the screen
  • Dragging the "common edge" right makes window A grow and window B shrink

unfortunately the macOS APIs make it very hard to do something like this reliable.

However I currently assume Apple will add support for window snapping with macOS 10.15 - they would be able to add something like this.

Might sound stupid, but isn't this basically the split screen?

Kind of, but that only works in full-screen which personally I don't like.


Is there any update jomag's question now with macOS 10.15 (Catalina) or 11 (Big Sur)? I also very much like and often use the mentioned Ubuntu functionality and would welcome it on my iMac a lot!

+1 for this one.
This would be a killer feature and it is one area when for example windows 10 management of windows makes it so easy to create a window layout and than dynamically adjust all windows together.

+1 - it would be really nice to have this functionality.