Rack::Robustness provides you with an easy way to handle errors in your stack, for making web applications more robust.

Rack middleware for serving RPC endpoints.

Upload files securely

Rack middleware to automatically include code for Smart App Banner, introduced in iOS 6.

Drop-in image thumbnailing for your Rack stack.

If the user clicked through from an affiliated site, this middleware will track affiliate tag, referring url and time.

Rack-based console inside your web applications, using pry

Rack middleware to force subdomain redirects.

\Rainbows! is an HTTP server for sleepy Rack applications. It is based on unicorn, but designed to handle applications that expect long request/response times and/or slow clients.

A toolkit for building Google Wave robots in Ruby

Open source Ruby on Rails photo gallery engine designed for integration with Refinery CMS.

Sinatra based foreign API simulation

Provide rspec matchers to match http response code

A gem to integrate with the Responsys SOAP API

Consume RESTful APIs effortlessly

Rack middleware and application to show deployed application's revision (commit)

Simple, straight-forward base for web-frameworks.

When you write a web API, you make a promise to the world. RSpec API helps you keep your promise.

Wrapper around the tika-app jar

A library for interacting with web services (and building SOAs) at blinding speed.