A really fun feature of herbstluftwm that I’ve not seen replicated is that monitors are virtual and can be reconfigured on the fly, so you can have e.g. a monit

A really fun feature of herbstluftwm that I’ve not seen replicated is that monitors are virtual and can be reconfigured on the fly, so you can have e.g. a monitor that is bigger than your physical screen, or a little virtual monitor that you can pop in and out of your screen as a kind of notepad.