KWM looks like its actually hooking on the window creation event, so it functions like I3&#x2F;ratpoison&#x2F;xmonad&#x2F;dwm&#x2F;awesome&#x2F;etc. I don&#x27;t have a OS X machine to test it out (you&#x27;ll pry Arch from my cold dead fingers, thank you very much), but it looks like the genuine deal compared to Divvy &amp;co.