Aptana: Free IDE Html/Javascript Editor

Aptana IDE make your Ajax applications easier to develop, faster to deploy, and simple to manage. Aptana is a robust, JavaScript-focused IDE for building dynamic web applications.

Aptana IDE is a free, open-source, cross-platform, JavaScript-focused editor and development environment for building Ajax applications. It features code assist on JavaScript, HTML, and CSS languages, FTP/SFTP support and a JavaScript debugger to troubleshoot your code.

Aptana IDE Web Features

• Free and open source; cross-platform, stand-alone IDE or Eclipse plug-in
• File and project-based workflow with integrated FTP/SFTP
• Real-time, Wiki-based online help; IDE translated into multiple languages
• Scriptable using JavaScript ("Aptana Monkey")
• Backed by full-time developers; nearing a million combined downloads
• Deep support (including cross-browser tips) for JavaScript, HTML, CSS
• Syntax highlighting, auto completion, code assist, error reporting, etc.
• Full support for JavaScript and CSS embedded within HTML; unified outlining
• Works with any JavaScript, incl. all Ajax libraries
• JavaScript debugger with live Firebug integration

You can download Aptana for free at here.