Sinatra (software)

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Web microframework for Ruby

title: "Sinatra (software)" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["articles-with-example-ruby-code", "free-software-programmed-in-ruby", "software-using-the-mit-license", "web-frameworks"] description: "Web microframework for Ruby" topic_path: "technology/web" source: "https://en.wikipedia.org/wiki/Sinatra_(software)" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Web microframework for Ruby ::

::data[format=table title="Infobox software"]

Field	Value
name	Sinatra
logo	Sinatralogo.png
author	Blake Mizerany
developer	Konstantin Haase
released
latest release version
latest release date
operating system	Cross-platform
repo
programming language	Ruby
genre	Web application framework
license	MIT License
website
::

Sinatra is a free and open source software web application library and domain-specific language written in Ruby. It is an alternative to other Ruby web application frameworks such as Ruby on Rails, Merb, Nitro, and Camping. It is dependent on the Rack web server interface. It is named after musician Frank Sinatra.

Designed and developed by Blake Mizerany, Sinatra is small and flexible. It does not follow the typical model–view–controller pattern used in other frameworks, such as Ruby on Rails. Instead, Sinatra focuses on "quickly creating web-applications in Ruby with minimal effort." Because of much smaller size compared to Ruby on Rails, it is also called microframework.{{cite book |first1=Lucas |last1=Carlson |first2=Leonard |last2=Richardson |title=Ruby Cookbook: Recipes for Object-Oriented Scripting |publisher=O'Reilly Media |year=2015 |isbn=9781449373696 |url=https://books.google.com/books?id=oRqkBwAAQBAJ&q=Sinatra+microframework&pg=PA679}}

Some notable companies and institutions that use Sinatra include Apple, BBC, the British Government's Government Digital Service, LinkedIn, the National Security Agency, Engine Yard, Heroku, GitHub, Stripe, and Songbird. Travis CI provides much of the financial support for Sinatra's development.

Sinatra was created and open-sourced in 2007. It inspired multiple ports and similar projects in other programming languages, such as Express.js and Scalatra.

Mizerany and Heroku's Adam Wiggins introduced and discussed Sinatra at RubyConf 2008.

Example

::code[lang=ruby] #!/usr/bin/env ruby require 'sinatra'

get '/' do redirect to('/hello/World') end

get '/hello/:name' do "Hello #{params[:name]}!" end ::

References

"Taking the Stage - Sinatra: Up and Running". Safaribooksonline.com.
[http://sinatrarb.com/about.html Sinatra: About]
[http://www.sinatrarb.com/intro.html Sinatra: Readme]
[https://www.apple.com/opensource/ Open Source software used by Apple]
[http://thechangelog.com/post/1205495359/zeitgeist-twitter-zeitgeist BBC Zeitgeist] {{webarchive. link. (2010-11-28)
[http://radar.oreilly.com/2012/01/with-govuk-british-government.html O'Reilly radar: With GOV.UK, British government redefines the online government platform]
[https://www.youtube.com/watch?v=qZcmF3yonjs JRubyfying LinkedIn's Front-end]
[http://www.nsa.gov/public_info/media_center/careers/video/TheProgrammer/index.html NSA Careers: The Programmer] {{webarchive. link. (2013-12-16)
(22 November 2011). "Open Source (Almost) Everything".
[http://www.sinatrarb.com/wild.html Sinatra in The Wild]
"Save Data Automatically with Ruby on Rails".
[http://rubyconf2008.confreaks.com/lightweight-web-services.html Confreaks: RubyConf 2008] {{webarchive. link. (2009-03-31)

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::