The Expression Web 2 Software for Windows from Microsoft is a professional web design application for Windows. It features an interface designed to facilitate standards-based site design, complete with support for CSS, PHP, and ASP.NET 3.5.
Web Standards
Expression Web is fully compliant with web standards such as XHTML, CSS, XML, and XSLT. This ensures that your pages are compliant to standards, and will display properly in standards-compliant web browsers.
CSS Support
You'll be able to develop powerful CSS-based web pages with Expression Web. You can create custom CSS layouts, or use site templates to get started quickly.
ASP.NET 3.5 and PHP
Expression Web supports ASP.NET controls, which can be used to make interactive web sites, complete with database integration. It also supports the PHP programming language.