Result — leaptab.
By default app uses
win + w for switching windows, but with
--use-alt-tab it can use
alt + tab.
For opening window switcher (
win + w or
alt + tab) and switching to window
you need to use circle gesture. For selecting window – swipe gesture.
Video with usage of leaptab:
Leaptab tested with ubuntu, but should work on all major platforms, but probably only with