BlueGriffon is an interesting looking Web Editor based on the rendering engine of Firefox (compares to Nvu). BlueGriffon is a new WYSIWYG content editor for the World Wide Web. It is powered by Gecko, the rendering engine of Firefox, so document you edit will look exactly the same in Firefox. At first quick tests it feels like a modern solution to edit Web pages in conformance to the latest Web Standards. It’s free to download and available on several languages. BlueGriffon looks promising.