What Ruby IDE do you prefer? [closed]

Which IDE is used for Ruby?

RubyMine by IntellIJ. RubyMine bills itself as “the most intelligent Ruby and Rails IDE”. IntellIJ by JetBrains is also a heavy hitter, consistently being in the conversation for best IDE for multiple languages. With that said, RubyMine is a very natural first option to explore.

Does NetBeans support Ruby?

Update: Netbeans has dropped support for ruby, unfortunately.

RubyMine from JetBrains. (Also available as a plugin to IntelliJ IDEA)

Have you tried Aptana? It's based on Eclipse and they have a sweet Rails plugin.

Redcar has been getting some attention lately, as well. Still early in its life, but it shows promise.

On Mac OS X, TextMate is a godsend.

The latest Netbeans IDE (6.1) has a pretty solid Ruby support.

You can check it out here.