Ruby on Rails
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Ruby on Rails is an open source web application framework written in Ruby that closely follows the Model View Controller architecture. It strives for simplicity, allowing real-world applications to be developed in less code than other frameworks and with a minimum of configuration.
Ruby on Rails was created by David Heinemeier Hansson for use in the development of Basecamp, a project-management tool. It was first released to the public in July 2004.