There is also Cinnamon Writer which describes itself as a WYSIWIG editor so whilst not a WP it has some similarity but to be honest most software is enthusiasts and back room coders. TBH i think the enthusiasm for OS4 died even before classic came out. In fact the only commercial software that is not games that i can find for OS4 is Hollywood3.1 and Hollywood Designer which are out for OS3, WarpOS and MorphOS as well.