Ruby on Rails was made by David Heinemeier Hansson during his work on Basecamp, a venture the board device by the organization of a similar name, Basecamp. It was first delivered in July 2004 and was completely publicly released in February 2005. The structure arrived at new statures when it was delivered with OSX Leopard (10.5) in October of 2007. As of composing, the most recent stable Ruby on Rails variant is presently 5.2.0, delivered on April 9, 2018. To put it plainly, Ruby on Rails can be considered as an open-source full-stack web application structure that sudden spikes in demand for the item arranged programming language called Ruby. Consequently, Ruby on Rails is generally abbreviated to Rails just or RoR condensing. RoR structure permits fabricating and keeping up with big business level applications with astounding plan and inside a brief time frame.
Source: https://mobilunity.com/blog/cost-to-hire-ruby-on-rails-developer/