ScribeFire

I've been playing with ScribeFire (a Firefox extension) today, and I'm finding it to be a pretty good HTML editor. It runs right in the browser (one of the configuration items lets you run it in its own tab, which is cool). It'll save drafts locally, which is good for offline writing. And if I put a URL in the copy-and-paste buffer, when I highlight some text in ScribeFire and click the URL button, the URL in the buffer automagically appears in the URL dialog box.