A simple rack application library - alpha release.

Pepper is a Ruby, DSL based framework for creating RESTful web applications. It adheres to the Ruby Rack specification.

Payment gateway abstraction for rack applications. Think omniauth for off-site payment.

A generalized Rack middleware for importing group contacts from gmail.

Small Rack (Ruby) application serving OpenVPN status file.

Rack middleware to provide route for heartbeat and version pages. Includes links to github repo.

Installs as Rails plugin or Rack middleware for non-Rails apps

A tiny helper to sort columns in Rack apps

Middleware for Rack and Sidekiq to scale heroku. A heroku process knows everything it needs in order to scale itself. A little configuration, and you're set.

Pup is a rack based ruby web framework for developing web applications with ease

Pubsubstub can be added to a rack Application or deployed standalone. It uses Redis to do the Pub/Sub

Upload files to Rackspace Cloud or Amazon S3 by URL or file with automatic image resizing.

Rack middleware that writes the serial number of issued certs to a Redis database. Uses r509 and r509-ca-http

Sinatra札幌の2013年～2014年の活動を振り返ると、いろいろなものとSinatraを組み合わせたものがほとんどでした。そこで、Ruby/GTK2（GTK+）、Gosu（SDL）、Sinatra（Rack）を例として、GUIアプリケーション、ゲーム、Webアプリケーションを対比させてみたいと思います。

Test S3 integration locally. Originally created by Curtis Spencer, modified by Mario Visic at Envato.

Rack Server API

A series of components for implementing the Ext.Direct API specification in Rails 2.3 and higher. Ext.Direct in Rails is implementede with Rack Middleware.

Enforces Rails relative URL root at the Rack level, i.e. before requests reach Rails.

The elegance of Rack with none of the unreliability of HTTP

Easy and simple way to package up your rack based application into a .rap (Ruby Application Package) for deployment to a web container that supports .rap such as ThunderCat.