NetBeans.org - (Free)
NetBeans IDE is a tool that simplify the process of application development or the creation of a website.
The program automatically detects the presence of Java, JDK, SOA, Ruby, MySQL, etc.. on your system, as well as GlassFish or Apache servers, to provide the necessary plugins. You can easily create Web applications, corporate portals, cross-platform software in Java, software for mobile phones and you will have many editing tools, a debugger, a preview module, templates and libraries, functions and completion of implementations.
The latest version of NetBeans IDE now supports the specification language Java SE development. It also integrates with Oracle WebLogic Server and supports Oracle Database and GlassFish. We note in passing the HTML5 editing facility and a new GridBagLayout designed to improve the user interface development and editing Java code.