QuantaGold

From theKompany.com:

Quanta Gold is a the Web developer's dream tool. Use its simple point-and-click interface to quickly and easily create powerful websites, even using the latest scripting languages like PHP. Keep an eye on the growth and structure of your site with its special tree view. Take advantage of its syntax highlighting to easily read your code. All this and more is possible in Quanta Gold -- the professional-level tool for creating dynamic websites.
Features Syntax highlighting with support for ColdFusion, XML, PHP, SQL, Python, Perl, DTML - Zope, C++ and HTML, with more to come
Integrated FTP client.
Point-and-click interface to give easy access to a wide range of preformatted code fragments and attributes.
Contextual attributes dialog -- press the F4 button at any time, and you're presented with a list of possible attributes for the currently selected item or function. Choose one, and it's immediately integrated.
Tree view to allow you to elegantly check and manipulate your website's structure.
Preview function lets you see the results of your work while you're working.
Easy upgrade path from previous versions of Quanta. You can natively use Quanta project files in Quanta Gold.
Contextual documentation included for scripting languages such as PHP, JavaScript and CSS. Just press the F1 button when the cursor is in any particular PHP function or HTML fragment to get the help you need.