Adobe Dreamweaver is a web development tool originally created by Macromedia to assist developers with making websites quickly in a What You See Is What You Get (WYSIWYG) interface. It is available for Mac and Windows, and has support for CSS, ASP, PHP, JavaScript, and more. In addition to the WYSIWYG interface, it also has a text editor so more experienced developers can get into the actual code and make alterations to it. The latest version is Adobe Dreamweaver CS4 v10.0.