I've always been using the "HTML Editor Phase 5" for writing HTML. It's quite good, but IO don't know whether it exists in an English version, too.

If you could understand German, I'd strongly suggest "SelfHTML" THE reference in the German language. Available online and as download.

I think even without understanding German, it's quite good because of the examples.

When you find a big kettle of crazy, it's best not to stir it.
--Dilbert cartoon

"Interplay.some zombiefied unlife thing going on there" - skavenhorde at RPGWatch