Interesting, this seems to have been around for quite a while, though not as long as AfterStep and Window Maker. I wonder why the author decided to write their own version instead of helping out with one of those projects.

There was WindowMaker for a while too, just a window manager.

I wish that all of these sort of efforts would be folded into GNUstep:

gnustep.org

and that we would arrive at something useful and easily installed and widely accepted.