Aptana Studio – Free Download
Aptana Studio is a complete world-class HTML, CSS, and JavaScript editor,
This software includes powerful authoring tools for HTML, CSS, and 
JavaScript, along with thousands of additional plugins created by the community.
Aptana supports most popular libraries including jQuery, Prototype, YUI, dojo, Ext JS, MooTools, and others. Aptana Studio is cross-platform, 100% free, and open-source. The software is available for Windows, Mac and Linux platforms.
