I have found a 'Visual Forth' under GPL. In fact it is called BigForth. It has a widget-library(MINOS) and a dialog editor(Theseus). It seems that Theseus generate the code in BigForth. BigForth include some kind of OOP and module system. It is mainly for X-Windows but there is also a port to Win95. See http://www.jwdt.com/~paysan/bigforth.html Paul