Multiplex multiple rack servers to the same app.

Would be useful to enable OpenID authorisation with your Ruby/Rails-based blog, personal website or whatever.

A Rack middleware that provides an endpoint to start the New Relic agent.

Automatically generate webservice endpoints for Newsstand

Racknga is a Rack middlewares that uses Rroonga features.

Transparently secure your rack application with google. For test rigs etc.

Rack middleware to stop CSS/jQuery animations.

Add a X-Robots-Tag: noindex header on a given condition.

treat script tag in response.body when access with old mobile phone.

Rack Middleware for node manipulation.

Rack::NonCache is a rack middleware that disables HTTP browser caching.

Make /robots.txt block all robots

Meh

A Rack Middleware that fakes a session

Delegates OAuth authentication to other authentication server

Logging per request memory usage with rack app.

Saves objectspace to a key-value store after every request

Middleware which inserts Olark JavaScript embed code before </body> in HTML served by Rack.

Use your Rack application on AWS Lambda.

Provides a more HTTPish API around the ruby-openid2 library