Flux is an advanced XHTML and CSS web design software.

You can do Web 2.0, AJAX, and most other buzzword-compliant things. Flux has the following features:

Drag and drop design of web pages, you can do almost anything without touching or even seeing XHTML/CSS . But you can meddle with the code if you want.
Apply cool (or cheesy) effects to images from right within Flux.
Attach funky javascript actions to your page without having a clue what youre doing.
Embed Quicktime Movies, Flash and other objects.
Edit sites directly off FTP and SFTP

Create the whole site within the WYSIWYG editor, type in XHTML, or a bit of both. You can use one of the supplied templates to get you started, or just stare creatively at a blank page.

Whats New
Version 3.2.41:

Flux will now offer to reload a file that has been modified in an outside editor. If the Flux version has not been modified, the reload will be automatic.
Reliability and performance improvements.

Requirements
PPC / Intel, Mac OS X 10.5 or later

Link for more information: http://theescapers.com/flux/