I'm experimenting with creating Rack middleware gems. This lightweight gem servers as a replacement to Rack's CommonLogger statements. Improvements include colorized terminal output based on HTTP request method.

Proxy that translates strings

Rack middleware; truncates error body

The Recontributed Rack Middleware

rack middleware to add u2f authentication to a rack app. Includes registration.

Rack middleware for inserting Google Universal Analytics and calling its API.

Check for unix domain socket usage

Rack middleware to uppercase your app's responses, built as an example/demo.

Middleware for signing urls

Rack middleware to modify Unicorn's procline to display request method, path and uuid during the request.

Urchin Tracking Module for rack application.

A rack middleware that searches for UTM tags in the request params, and stores them in cookies for later use.

rack-varnish-esi is a Varnish ESI middleware implementation for Rack which is as close as possible to Varnish's own ESI implementation. Note: This gem should only be used in development.

Rack middleware to aid with parsing vendor accept headers

Rack middleware for verifying signature of LINE Bot callback

A warden/sinatra mini-app providing authentication and user management for any rack-based framework.

Simple gem to load rack middleware only in certain environments.

Rack middleware that explicitely acquires a Sequel connection from the pool per request

Encode from not UTF-8 www-form-urlencoded params to UTF-8 www-form-urlencoded params

Gem for overwriting outputting JSON formatted access logs from Rack apps