BlueGriffon 2.1.1.

BlueGriffon is a WYSIWYG editor which is powered by Gecko, the same rendering engine included in Mozilla Firefox. One of a few derivatives of Nvu, a now-discontinued HTML editor, BlueGiffon is still actively updated, and seems to be the only actively-developed derivative which supports HTML5 as well as modern components of CSS. Licensed under each the MPL, GPL, and LGPL, version of BlueGriffon are available for most major platforms.