>I think it's a shame it never carried over to QT or GTK+

Same here, but we know why. NIH Syndrome, or people did not realize how great it worked so they did their own thing, making things far more complicated then necessary.

I remember that time period, people were begging Motif/CDE to open up the source. Back then if that happened, many people would have jumped in and fixed a lot of issues. Now is a far different time :(

There was LessTif but it was incomplete, altough a good chunk of tools could run with it. DDD for instance.