NetBeans 7.2 : Dreamweaver in Linux and more.

This is an amazingly powerful tool that equally powerful to work as a platform framework for Java desktop applications and as an IDE (integrated development environment) while developing something with PHP, JavaScript, Scala, Clojure, C, C++, Groovy, Ruby, Python and many more.

The NetBeans IDE runs virtually anywhere given the fact that a JVM is installed. It is developed in Java. You can download it here: http://netbeans.org/downloads

I recommend Net-beans 7.2