Using Ruby on Rails for Web Development on Mac OS X Apple released this top-notch tutorial/introduction to Ruby on Rails, the RAD web development system that's been responsible for so many cool web 2.0 apps lately. Apparently, a good many Rails developers already use the Mac, and the platform is a good fit for others who don't yet. Also today, a group of developers released the open source RadRails, an Eclipse-compatible IDE for Rails development.