MUI library

Where can I get the MUI libraries/DLLs?

I read that it is part of the GLUT package but it is not in any of zip files I’ve downloaded.

A friend of mine has tried mui and had some problems with it. So he emaild some questions to the guy how made the help for mui, and he answered that it was an old bugged librarie, and that my friend should use glui or pui, that are better new libs like mui. I also saw GLOW, that seemed cool too, but I don’t remember the site (look in the old headlines).