Coda is an HTML+CSS editing tool for Mac released by Panic Inc. But don't panic... Coda is apparently a very nice tool, although not a WYSIWYG editor. But even if your primary platform is not a Mac, don't miss the Coda web site, it's a pure jewel. It's nice, it's smooth, it's mac-alike, it's flash-less, it's well done, it's professionnal and nice-looking. I LOVE IT and it's probably the first time I am so impressed by a web site. (source: François Druel)