Ruby on Rails (RoR) is a Web dev framework that was not created by Microsoft or Sun or even a big group of open source developers. Ruby was created by one guy, David Heinemeier Hansson of Copenhagen, Denmark. Nevertheless, this little framework is gaining momentum among some developers for its clean and simple approach. For those who haven’t heard much about Ruby, News.com has a good report on it, as well as an audio interview with Hansson.