If you are creating Rack middleware that changes the HTML response, use Rack::Mason to get a head start. Rack::Mason takes care of the boilerplate Rack glue so that you can focus on simply changing the HTML. Notethis is a fork from https://github.com/techiferous/rack-mason (c) techiferous@gmail.com

Rack middleware that populates the params variable with the contents of matrix parameters in a URL

Sam Saffron's memory profiler made up as a rack middleware that writes reports to tmp folder

Rack middleware to merge the user-defined header to cookies.

Add metadata tags to the header

A replacement for Rack::MethodOverride that allows you to choose which methods are overridable

Authenticates signed server requests from a MicroService and resolves the MicroService.

rack middleware to response any image file via google search

A rack based middleware that does fun/silly metrics reporting.

A Rack Middleware to help to fix mixed contents issues

Rack middleware for tracking Mixpanel events

Rack middleware to fake some environment variables that make it seem like mod_pubcookie is being used. Useful for dev environments.

Rack::Modernizr is a Rack middleware that automagically includes the Modernizr javascript framework and exposes the results to your server-side scripts.

A rack middleware and/or endpoint to serve up files from MogileFS

Rack middleware to process Web Monetization API states

Save data into your mongo collections through a rack app

A rack application working as an adapter for Mongoid

A rack application working as an adapter for Mongoid

A rack endpoint for adding subscribers to an email list

Helps analyse memory usage in your Rack apps