Komodo IDE (Mac OS X/Intel) sharewareScreenshot 

Komodo IDE 4 is a powerful, multi-platform, multi-language IDE for end-to-end development of dynamic web applications. Komodo IDE makes creating robust web apps fast and easy, with a rich feature set for client-side Ajax technologies such as CSS, HTML, JavaScript and XML, coupled with advanced support for dynamic languages such as Perl, PHP, Python, Ruby and Tcl.

 

Screenshot of Komodo IDE (Mac OS X/Intel)