Aptana Studio for Mac

From Aptana:

Why are Web developers world-wide choosing Aptana Studio? They've discovered that Aptana Studio offers unprecedented support for Ajax combined with today's popular Web platforms. Download Studio standalone or plug it into Eclipse to see for yourself. It's your choice.

• HTML, CSS, and JavaScript Code Assist
Complete HTML DOM 0, 1 and 2 support for HTML, CSS and JavaScript code assist. CSS code assist provides both suggestions and hints. HTML code assist includes all HTML elements and properties.
• Ajax Libraries
Aptana Studio comes packaged with popular Ajax libraries which are core to so many Web development projects today. jQuery, prototype, scriptaculous, Ext JS, dojo, Spry, and YUI come bundled right in. More, like MochiKit and MooTools are available as separate plug-ins. For each you get code assist, importable sample projects, and doc links at your fingertips.
• JavaScript Debugging Debug!
Studio integrates with Firebug for Firefox, offering multiple debugging options including breakpoints, stepping through code, DOM inspection, and more. Aptana Studio Pro offers IE debugging.
• DOM Outline View
View and navigate the DOM in this hierarchical outline of your HTML page. Select nodes to jump to that location in the editor. Filter nodes to see collections that match patterns.
• FTP, Cloud, SFTP, FTPS
Transfer files to remote servers using basic FTP, or deploy instantly to Aptana Cloud. For secure connections, Aptana Studio Pro offers FTP over both SSH (SFTP) and SSL (FTPS), giving you ultimate flexibility in securely accessing your content.
• Database Tools
Studio is easily plugable with Quantum DB toolset for working with local or remote relational databases. For projects that use PHP or Ruby on Rails in Aptana Studio or in Aptana Cloud, all the wiring is automatic. Other databases are easy to hookup as well.