In the beginning was Netscape Gold. Then Mozilla Composer. From the ashes of Netscape and the code of Mozilla Composer came Nvu. Nvu had a cousin, KompoZer. But all this tools now belong to History and are extinct or on path to extinction.
In the meantime, Mozilla brought Firefox to the masses and its rendering engine, Gecko, has the power to fuel a next-generation wysiwyg editor for the World Wide Web. This editor is BlueGriffon™. Stay tuned !