> Ubuntu is great for resizing - alt + middle click anywhere on the window. If only other OS'es could do the same.

Not Ubuntu -specific. On all my setups alt+LMB moves, alt+RMB near any edge resizes that specific edge.

No need for pixel-perfect grabbing.

Microsoft's PowerToys did add that in (I think) the last version. Alt + Left click moves, alt + right click resizes.

Yeah, this is the one thing about Linux I constantly miss when using anything else.

I wonder how hard it would be to make a thing for that...