Padrino is a free and open-source web framework, written in Ruby and based on Sinatra.

It is dependent on the Rack web server interface.

The framework was created by Nathan Esquenazi, Davide D'Agostino and Arthur Chiu based on the prior sinatra_more gem.

The framework was created in order to extend Sinatra to more easily support rich web applications.

This is a list of major functionality Padrino provides on top of Sinatra:[4] Note that as a user of Padrino, each of the major components can be pulled in separately to an existing Sinatra application or they can be used together for a comprehensive upgrade to Sinatra (a full-stack Padrino application).