In 2004, Ruby on Rails frameworkwas released. Ruby on Rails is considered the most prominent web application framework of the latest generation [4]. It is written in, and works on top of, the Ruby language. Characteristics of Rails are “don’t repeat yourself” principle,“convention over configuration” conceptand use of several architectural patterns, such as Model-View-Controller and Active Record. After Ruby on Rails, similar frameworks written in other languages followed, such as Django (Python), Catalyst (Perl), ASP.NET MVC (.NET languages) and Zend(PHP).