I used HTML Kit for years when I was on windows 98. When I moved to the mac I looked for something that was similar. Smultron is good I find. Not as good (if i remember correctly) as HTML Kit, but its good. You can also download HTML tidy dmg if you look for it to get the tidy functionality, as a stand alone app. Smultron seems to need more developers. Its a good app though. I tried the full version of BBEdit and did not like it for HTML & CSS coding.