- Any idea why this view isn't used in file managers other than Finder? (especially Windows Explorer & GNOME Nautilus/Files). This view has so many advantages (very visual, enable quick round-trips in a hierarchy, show the path leading to a leaf while conserving screen space, enable copying files from anywhere to anywhere, more adapted to our horizontal screens and vision than traditional WindowsExplorer-ish views) that I can't understand why it wasn't copied elsewhere. Is it patented?

- Any option for such a file manager under Linux/Windows? Maybe a Nautilus extension/fork (and under windows, an Explorer patch/extension)?