Rack-ESI is a Nokogiri based ESI middleware implementation for Rack with support for include tags, all other ESI namespaced nodes are just removed. To make this gem work you must define the (xmlns:esi)[http://www.edge-delivery.org/esi/1.0] namespace in your text/html response. Note: This gem shou...

Rack middleware to send email when exceptions are raised

rack-facebook is a Rack middleware that checks the signature of Facebook params, and converts them to Ruby objects when appropiate. Also, it converts the request method from the Facebook POST to the original HTTP method used by the client.

See http://developers.facebook.com/docs/authentication/canvas

Parse and serialize geospatial HTTP headers.

Embeds Google Analytics tracking code in the bottom of HTML documents

Rack middleware implementing graphql endpoint.

Rack middleware for idempotency guarantees in mutating endpoints.

Allows you to use Jetty as a Rack adapter in JRuby. Compatible with rackup and rails' Rack support.

Rack middleware that fixes the discrepancy between jQuery.param and how Rack parses nested queries.

Rack middleware for Linked Data content negotiation.

Rack::LTI provides LTI launch and configuration endpoints to your Rack-based application. It handles configuration, authorization, and routing. For more information about LTI, see http://www.imsglobal.org/toolsinteroperability2.cfm.

A rack middleware to output access log in ltsv format

Rack::MethodOverride only checks the X-Http-Method-Override header and the form encoded post body for _method. Rack::MethodOverrideWithParams checks both of those _and_ the query params. So, if you POST xml with a url like http://example.com/?_method=delete the application will see it as a delete...

It's a rack middleware to parse multipart/related requests and rebuild a simple/merged parameters hash.

Provides a simple router & dispatcher for Rack.

Rack parameter validation and type coercion.

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.

Includes {'X-Clacks-Overhead': 'GNU Terry Pratchett'} header inside any rack application. http://redd.it/2yt9j6

Private Rack middleware purpose is to protect your Rack application from anonymous via a secret code form.