World beyond Rails - web frameworks

Even though Ruby owes most of its popularity to the Ruby on Rails framework, many other great frameworks and libraries also exist in the community. Because they are not so popular as Rails, you can rarely read about them on blogs or see them being mentioned in the newsletters. This article is an overview of interesting but less hyped solutions that still worth learning and using to build awesomeness with Ruby.This is the first article from the series of articles showing other less-popular but still interesting libraries built with Ruby.