RequestMeter is a Rack middleware gem for Rails applications that tracks and limits API requests per API key within a specified time window. It is ideal for Rails APIs wanting built-in request quota enforcement.

A Rack middleware for SSO(single sign-on).

Arthropod based Rack server

Allows you to get HTTP status_code, response_headers, etc. when using Capybara::Selenium::Driver just like you can when using Rack::Test

Provides a profiler page of the ruby execution which has infomation of gc and object allocation.

Rack middleware to notify HTTP endpoint with application notifications

A middleware to automatically set the base URI for [X]HTML documents. This is useful when you want to mount a web application on a subdirectory, e.g. http://example.org/myapp/

A simple spec-compliant GraphQL rack application and middleware

Full-featured Content Security Policy as Rack middleware

The super-friendly rack helpers -- URL generation.

Rack app to locate employees in an office by Wi-Fi MAC address and WLC association data

Rack middleware to disable cookies when static content is being served, which can prevent caching on some HTTP accelerators (Varnish).

Rack application for Google DFP. Comes packaged with optional and independant Rails and ad placeholder integrations.

A web framework built on top of Rack, it has the simplicity of sinatra and the structure of rails

theme_park is a flexible multiple theme plugin for rails3, sinatra, and more...it's rack based

Rack middleware to handle validating Lti 1.1 requests

An in-development web framework using Rack.

Rack middleware that filters out the browsers your app doesn't support.

Warbler is a gem to make a Java jar or war file out of any Ruby, Rails, Merb, or Rack application. Warbler provides a minimal, flexible, Ruby-like way to bundle up all of your application files for deployment to a Java environment.

Restricts your Rails app to only provide requests during business hours using a Rack middleware