I stumbled upon another win32 tiling WM today (except dwm on CygX11 :D) and thought I might mention it here for anyone interested.
http://youtube.com/watch?v=1BMHq1X2sg0 http://dockbox.demonastery.org/ (seems down here) cached: http://64.233.183.104/search?q=cache:TSAxp1h0qkEJ:dockbox.demonastery.org/
