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.


  • 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
  • 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)
  • 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


Companies using Sinatra


  • 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.
  • - Add countdown times for any “happening” or event and share it with others