Just a quick note for all of the Mac OS X users out there - there's a new editor in town and it looks simple and powerful, just as an OS X app should be.

Tumult HyperEdit is a lightweight HTML editor with a preview pane that displays the web page live as you type. HyperEdit breaks the tedious cycle of writing html, saving the file, then reloading and viewing the page in the browser by combining the writing phase with the viewing phase. This clarifies the effects of your changes and speeds up the overall process of making a web page. W3C-based validation will red-underline any mistakes. It uses the same rendering engine found in Safari, so it is not only standards compliant, but also very fast.

I love the built-in W3C validator as well as the Javascript debugger/evaluation. And, of course, if you have a PHP install local, you can execute your scripts before actually pushing them out. The only thing that I wish it had (and this is just me, I'm sure) is FTP support for saving/opening files. I find that immensely useful, and feel a bit helpless without it. So, check out HyperEdit and see what you think...