title: What Ruby IDE do you prefer?
body: <p>I've been using Eclipse with RDT (not RadRails) a lot lately, and I'm quite happy with it, but I'm wondering if you guys know any decent alternatives. I know NetBeans also supports Ruby these days, but I'm not sure what it has to offer over Eclipse.</p>
  
  <p>Please, list any features you think are brilliant or useful when suggesting an IDE, makes it easier to compare.</p>
  
  <p>Also, I said Ruby, not Rails. While Rails support is a plus, I prefer things to be none Rails-centric. It should also be available on Linux and optionally Solaris.</p>