The rack-auth-cookie library provides a Rack middleware interface for authenticating users using a cookie

rack-banken is rack application for return error response.

Rack-Bunto transforms your Bunto app into a Rack application.

rack-bert-rpc is rack middleware that provides a BERT-RPC server implemenation for using BERT-RPC over HTTP

rackspace-cloud is a Ruby gem that provides easy, simple access to the Rackspace Cloud APIs, and specifically the Cloud Servers API.

Rack-rest-rspec: RSpec Matchers for REST Rack webservice

Rack::Health is a health check interface for rack applications.

Console for any Rack based ruby web app

Lookout-Rack Lookout-Rack provides easy interaction with Rack┬╣ from Lookout┬▓. It provides you with a session connected to your Rack application through which you can make requests, check responses, follow redirects and set, inspect, and clear cookies. ...

Rack::MobileDetect detects mobile devices and adds an X_MOBILE_DEVICE header to the request if a mobile device is detected. Specific devices can be targeted with custom Regexps and redirect support is available.

Streaming proxy for Rack, the rainbows to Rack::Proxy's unicorn.

rack-ecg allows you to serve a page that shows you facts about your deployed app to allow you to check that everything is running as it should: git revision, database migrations, and more

If you are creating Rack middleware that changes the HTML response, use Rack::Plastic to get a head start. Rack::Plastic takes care of the boilerplate Rack glue so that you can focus on simply changing the HTML.

Provides a more HTTPish API around the ruby-openid library

Rack::Unreloader is a rack middleware that reloads application files when it detects changes, unloading constants defined in those files before reloading.

rack-icu4x-locale

rack-session-stack

Live broadcast on app showing fire and blood everywhere? Image hosting site flooded with pornography? Or some other urgent reason to take your app offline in a hurry? rack-killswitch to the rescue.

RackDispatch is a Ruby library that makes it simple to build elegant and powerful web applications with Rack. RackDispatch provides a base class for defining your application topology and handlers to perform common server- side tasks.

rack-metrics is a performance monitoring tool.