Rack::Joint is a rack middleware to set redirect configuration with your anticipation.

rack-minitest = rack-test + Minitest

Rack Middleware for node manipulation.

Simple Rack middleware that catches OAuth2 access tokens and validates identity

Logging per request memory usage with rack app.

Provides a more HTTPish API around the ruby-openid2 library

A Gem for testing web applications don't generate mixed secure/insecure traffic. Keep that browser padlock locked!

Rack middleware to generate pages that can be served by a web server. Compatible with Rails page caching.

Asset pipeline for ruby Rack

Properly enforce cookie limits in Rack responses

If the user clicked through from a search engine, this middleware will detect the engine used and the terms searched.

Redispatch your response via another URL. Like a transparent, internal HTTP redirect.

Rack middleware for SassC which process sass/scss files when in development environment.

Rack middleware for API Version-specific Component Service redirection.

Rack Middleware for verifying signed requests

SimpleAuth HMAC authentication

If you're running a javascript single-page-app with html5 routing, you may notice that deep links will 404 unless your web front-end is configured to rewrite all non-asset paths to index.html. If you'd like to achieve the same rewrite using rack, this is the gem for you!

Rack::Skippable helps your Rack application to avoid running app logic (app#call) in some conditions.

Making Rack and Rails logs useful

A tiny zero-config Rack App to serve static files