BlueGriffon, The next-generation Web Editor based on the rendering engine of Firefox
BlueGriffon is a new WYSIWYG content editor for the World Wide Web. Powered by Gecko, the rendering engine of Firefox 4, it’s a modern and robust solution to edit Web pages in conformance to the latest Web Standards.
Because Gecko lives inside BlueGriffon, the document you edit will look exactly the same in Firefox 4. Advanced users can always use the Source View to hard-code their page.