Rack::GeoIPCity uses the geoip gem and the GeoIP database to lookup the city of a request by its IP address

Rack middleware to set ENVironment variables around your app.

rack middleware for writing access log to fluentd.

LESS CSS preprocessing for Rack apps.

Rack::Html5 sets custom headers for each HTML5 feature the browser supports.

Rack middleware for interfacing with the Cachely page caching service.

Rack middleware for authentication using JSON Web Tokens using the jwt_claims and json_web_token gems.

Rack middleware for serving alternate content on a given day

Rack middleware for compiling lesscss files into css

Helps analyse memory usage in your Rack apps

Simple Rack middleware that catches OAuth2 access tokens and validates identity

Rack middleware for in-app purchase receipt verification and product listing.

Rack middleware to filter params from HTTP requests

Log requests to your rack app along with the raw post data

A Rack Middleware for Japanese mobile-phones

Thin's asynchronous API available to any Rack server.

Get the Currently running Rack::Request from anywhere inside the request-thread

A rack middleware that outputs status when you hit /jsonz.

Rack middleware for redirecting one domain to another.

Datawire MDK integration Rack middleware.