NOTE: Feel free to fork Sinatra's website on GitHub and add your own entry to the wild.markdown file. Just push and send a pull request. We'll take care of the rest.

Applications #apps

• SequenceServer An easy-to-setup BLAST sequence search server
• Marley the blog engine without <textareas>
• Postview a simple blog-engine that render text files written in Markdown.
• Scanty an even more minimalist blogging engine
• Scanty using CouchDB
• Haze a lightweight and minimalist blogging engine using flat text files.
• Wind HTML5 blog engine focused in a easy, extensible and fast admin.
• git-wiki - a git-powered wiki
• Wordnatra an interface to Princeton's WordNet lexical dictionary
• GitHub-FogBuz logs your GitHub commits with FogBuz
• Notable listens on Jabber to take your notes and then displays them back to you
• Dash Sinatra provides a Ruby API to push metrics from an app to the
• Giftsmas Gift Tracking Website using Sinatra, Sequel, and Scaffolding Extensions
• Toopaste Pastebin site created with Sinatra and DataMapper
• Columnlog Tiny feed fetching app
• Kapow Comics on your iPhone
• Knapsack Pack pages into data URIs
• Thumblmonks Delayed HTTP Requests
• weaky a basic CouchDB wiki
• Amnesia an app that presents memcached server stats
• So Nice is a Small web interface to control iTunes, Rhythmbox or MPD
• sinatra-rubygems A complete reimplementation of the gem server command as a Sinatra application
• Nesta is an SEO oriented CMS/blog for developers
• Hancock A Single Sign On provider based on OpenID
• Hancock Client Rack middleware client for the Hancock server, written in Sinatra
• JubiGems Custom RubyGems server.
• {Sinatra Saucer} JRuby web application frontend for Flying Saucer, which converts XHTML into a PDF
• WineAdds micro-app that calculates common additions to wine
• Jaconda A simple team collaboration service that allows you to create chat rooms for groups through Gtalk/Jabber protocol. REST API is written in Sinatra
• Picky - a fast & clever semantic search engine.
• GitHub High Scores - A fun way to rank GitHub repository contributors in a 8-bit, 80's-tastic aracdey viewing environment.
• Git-Webby - Git Smart HTTP Ruby/Sinatra implementation with useful features.
• Trudy - A Nabaztag server.
• Markdown Tree - Serve a Hierarchy of Markdown files simply (like mksite or other site generators, only dynamic)
• streetart.io streetart.io allows you to share and discover interesting street art, public art and sculptures around you and your city. API is powered by Sinatra and Redis.
• TaskwarriorWeb - A Sinatra-based web interface for the Taskwarrior todo application. Because being a neck-beard is only fun sometimes.
• Travis CI - Free Hosted Continuous Integration Platform for the Open Source Community
• VDGB - Subscription based online video training platform for schools and teachers
• Metaflop An easy to use web application for generating and modulating your own fonts.
• puresong - A lightweight responsive application with PureCSS and SQLite and Sequel.
• Gleis PaaS - The Swiss Ruby on Rails Platform as a Service for your web apps
• Stardew Valley Crop Assistant - The go-to application for planning seasonal crops in the game Stardew Valley.
• Onetime secret - Secure secret sharing of sensitive content
• CuttingEdge - Dependency monitoring for projects in multiple languages, including shiny badges and e-mail notifications.
• Gollum - Gollum is a wiki system that uses git for storage. It supports a variety of markup languages.

Libraries and extensions #libs

• Sinatra::SimpleNavigation Easy creation of navigations (with multiple levels) with sinatra and the simple-navigation gem
• sinatra_more Library with agnostic generators, form builders, named route mappings, easy mailer support, and more.
• Sinatra's Hat Mount models as web services in Sinatra with ease
• Classy Resources Think resources controller, except for sinatra
• {Sinatra Ditties} A collection of plugins and useful helpers
• Chicago runtime and testing helpers, extensions, and macros commonly used by Thumblemonks
• Capinatra Quickly deploy Sinatra apps to Passenger.
• Frankie Easy creation of Facebook applications with Sinatra and the Facebook gem
• {Sinatra Application Template} Base app with DataMapper, Haml and RSpec. Fork and build.
• {Sinatra OAuth Provider} an OAuth provider implemented with Sinatra
• Spork Executes some aynchronous code using Sinatra running under Passenger
• Retweet Create Twitter apps like tweetdreams.org with ease
• {Rack Flash} Simple flash hash implementation for Rack with extra sugar for Sinatra.
• Sinatra-REST generates RESTful routes for your models (ActiveRecord, DataMapper, Stone)
• url_for Construct absolute paths and full URLs for current application.
• content_for Rails-like content_for helper for your views (supports ERB and Haml.)
• {Sinatra Effigy} Sinatra extension for Effigy (HTML in .html files, Ruby in .rb files) views.
• {Sinatra Mongoid} Sinatra extension for Mongoid (MongoDB ORM).
• Haml::More Adds more functionality to Haml and Sass
• Sinatra::AdvancedRoutes Makes routes first class objects
• Sinatra::Compass Integrates the Compass stylesheet framework
• Sinatra::ConfigFile Adds YAML config file support
• Sinatra::MoreServer Adds support for more web servers to Sinatra::Base#run!
• Sinatra::Namespace Adds namespaces, allows namespaces to have local helpers.
• Sinatra::Reloader Advanced and fast code reloader
• Sinatra::Static Cache-smart serving of static assets for Sinatra.
• Sinatra::Sugar Extensions for Sinatra's standard methods, like #set or #register
• Sinatra::TestHelper Adds helper methods and better integration for various testing frameworks
• Sinatra::WebInspector Allows you to inspect a running app
• Yard::Sinatra Displays Sinatra routes (including comments) in YARD output
• BigBand Pre-configured replacement for ::Sinatra::Base setting up useful extensions
• Sinatra::Jsonp JSONP output helper for Sinatra.
• Bowtie Admin generator for DataMapper models, on Sinatra.
• Sinatra::Kittens Random kitten pictures for Sinatra not_found pages.
• Sinatra::FuzzyLayout Extension for enabling or disabling layout template for views using regex.
• Sinatra::Param Parameter Validation & Type Coercion for Sinatra.
• SinatraLogger Provides logging functionaly to Sinatra application.
• Sinja RESTful, json:api-compliant web services in Sinatra
• React::Sinatra React on Sinatra Integration
• Sinatra::StrongParams Parameter filtering implementation for Sinatra.

Websites #sites

• CrowdfundHQ Create your own Crowdfunding site, no coding required.
• LinkedIn is a social network for business contacts
• I Shoot Film presents Funkaoshi's film photography posted to Flickr organized by film rolls -- on GitHub.
• Speed of Animals: imagine being a spotted hyena...
• Fabulously40 Mobile Sinatra powered mobile site of Fabulously40
• UploadBooth Sinatra powered Upload Service
• PasteBooth Sinatra powered multi-lingual Paste Service
• ShrinkBooth Sinatra powered multi-lingual URL shortening Service
• Gusg.us Blog - Ridding the long bus
• Deleanotes
• themoviedb.org The name says it all :)
• columnlog Tiny feed fetching app
• IronRuby Watch their great stats here
• MooURL The web's cutest URL shortening service
• FlexCode iPhone development
• California PATH program - UC Berkley In-vehicle applications on their Vehicle-Infrastructure Integration server
• TweepDiff Compare friends/followers of two Twitter users
• Effectif Development
• Chirp-chirp Write a Sinatra-based Twitter clone in 200 lines of Ruby code
• Rdoc.info Auto-generate and host Ruby library documentation using GitHub web hooks
• All Sorts An aggregator for novel collective nouns, driven by Twitter
• Scholas Social file-sharing for academics.
• Gemcutter Awesome gem hosting.
• The Setup The setup is a bunch of nerdy interviews (Source)
• A Good Company An awesome little portfolio for a great design company.
• dbpedia lite takes some of the structured data in Wikipedia and presents it as Linked Data (Source).
• Evan Lecklider Website showing off work, code examples and experiments built with Sinatra and Compass.
• DarkArts Studios Projects and source code of Clive Crous
• Conker Software Micro-company of Tom Philip that makes Web, Android and Boxee apps.
• Similander extracts keywords from a given URL to find similar pages (Source).
• Sombras de Papel Website of a pop-rock band from Barcelona (Spain) entirely made using Sinatra + HTML5. There's also an automatic mobile site.
• Scrum Primer - A short introduction to Scrum. The code is at Scrum Primer @ Github. Also uses r18n for Sinatra
• hike.io - The best place to find beautiful hikes online. Hike.io is free, open source, and anyone can make an edit. (Source)
• Goodnot.es - Listen to the 5 most popular songs of any artist of band. (Source)
• PC & Network Monitoring - Network/PC monitoring site backed with URL shortening service.

Companies using Sinatra #biz

• Heroku
• GitHub
• Apple
• BBC
• LinkedIn
• National Security Agency
• Agency Rainford
• Curbed Network
• Solutious
• Centro
• Apartment Therapy
• Inventive Labs
• ENTP
• Engine Yard
• Citrusbyte
• Lomographic Society International
• Nth Metal Interactive
• Osborne Brook
• Robot Mode
• thoughtbot
• Forward
• WyeWorks
• Idealist Digital
• A Good Company
• Ylastic
• Fork
• Ant genomics database - Fourmidable
• Mu Dynamics
• Scribble Squad
• Stanford
• Hiboux
• PentesterLab
• Animoto
• Red Hat
• Travis CI
• Clearhaus
• Odd-e
• Digital Deployment
• Icicle - Ruby Development Company
• Robocat
• Planet Argon
• Green Touch
• towards
• Ondokuz Mayıs University

Alumni #alumni

• OnBoard - a web interface to manage Linux-based network appliances
• Tweeps - conference app to aggregate tweets by attendees
• Rank Captain - Keyword based mass landing page generator with live template editor
• Sum - an email-based budgeting application
• Bloor and Lansdowne is Blansdowne - a photoblog about a neighbourhood in Toronto
• NYLS Upload Tool - Web-based replacement of FTP
• Calendar About Nothing - Seinfeld calendar for hackers
• Congrelate - Congress data mashup visualization tool.
• SavvyFranchises - Franchise Search + Discovery for the Savvy Entrepreneur.
• happens.co.za - Add countdown times for any "happening" or event and share it with others