DeveloperWorks: Using the Ruby Development Tools plug-in for Eclipse
IBM’s Developer Works website has an excellent article titled Using the Ruby Development Tools plug-in for Eclipse. The article runs through everything you need to know to get up and running with RDT and includes a ton of really nice screenshots to help out newbies. If you are looking for an IDE for Ruby, this just may be it.
This article introduces using the Ruby Development Tools (RDT) plug-in for Eclipse, which allows Eclipse to become a first-rate Ruby development environment. Ruby developers who want to learn how to use the rich infrastructure of the Eclipse community to support their language will benefit, as will Java™ developers who are interested in using Ruby.