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

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

Minimal server for Rack apps based in EventMachine and http-parser

A doorman for your Rack application. Checks if REMOTE_USER matches the subdomain. Requires some authentication means to set REMOTE_USER.

Pistachio provides a simple HTTP long polling middleware for Rack which is backed by the Stash gem

Pinion is a Rack application that you can use to compile and serve assets (such as Javascript and CSS).

Pingable is a Rack handler that let an app respond to a path /ping, with pluggable checks.

Rack health check endpoint.

Simple sinatra Rack application that allowes to run sql queries from a web page. Usable for administrative tasks.

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.

Inspired by Rackspace permission management system.

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

Tiny little Rack middleware to answer a configured set of path's with a HTTP 404.

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.

Enable server sent events with rack middleware implemented over Faye and Broadcaster (Redis Pub/Sub)

A rack application daemon that creates an iCal subscription file from exchange calendars.

Implements a Linked Data Platform domain model, Rack middleware for server implementers, and a simple Sinatra-based server for RDF.rb

A tiny helper to sort columns in Rack apps

A bare-bones Ruby HTTP server that talks Rack and uses a thread per connection model of concurrency.