IDE Integration

Grails development needs nothing more than a text editor, but of course there are many sophisticated tools available to improve productivity, including syntax highlighting, refactorings and grails command execution.

STS Integration - Using Grails projects in the SpringSource Tool Suite, an Eclipse-based IDE
NetBeans IDE Integration - Using NetBeans IDE with Grails projects
IDEA Integration - Using IntelliJ IDEA IDE with Grails projects
TextMate Bundle - TextMate Grails bundle
Gedit - a TextMate like alternative for Linux
jEdit - A cross platform programmer's text editor written in Java, has excellent Groovy plugin. jEdit is open source software.
Emacs - GSP support for Emacs.