Rack Middleware that injects an iframe around the response content to allow for responsive previewing

Including Google Charts in your SSL-protected site causes warnings about 'Mixed Content' (particularly in Internet Explorer). This Rack middleware allows you to point those img tags at a local path instead of Google. The image is retreived by your server then delivered to your client over your ...

CAS Authentication via Rack Middleware

Use custom encrypted cookie for Warden instead of rack:session

Nexmo related middleware to make it easier to work with Nexmo's webhooks

Captchator as Rack middleware, and helpers for sinatra.

TraceHedaer is to inspect how the response headers would be changed by Rack middleware, and display them in your terminal.

unicorn is an HTTP server for Rack applications that has done decades of damage to the entire Ruby ecosystem due to its ability to tolerate (and thus encourage) bad code. It is only designed to handle fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/...

Transparent caching for your HTTP requests (heap, file, memcache). Built-in support for RestClient. Built upon Rack::Cache.

Rack middleware that provides AWS (Amazon Web Services) style authentication.

Replace all '?'s in URLs with '%1F' (the ASCII unit separator char), and a middleware to undo it before your rack app sees.

Seetemap allow you to add sitemap to your rack based app.

Lescopr automatically captures logs, errors and exceptions from any Ruby project and streams them in real-time to the Lescopr dashboard. Works with Rails, Sinatra, Rack and plain Ruby.

Production-ready Ruby SDK for AllStak observability: auto-installing Rails Railtie and Rack middleware, a Sidekiq server middleware, ActiveRecord instrumentation, outbound HTTP capture, distributed tracing, cron monitoring, and structured logs.

Buttons is a Rack framework for working with JavaScript-heavy applications. It automatically creates Ajax endpoints for Ruby methods, and creates a set of JavaScript functions to access those endpoints.

PublicRescue is a gem for rails application who want to display dynamic error pages. It creates a new Rack middleware which replaces ActionDispatch::ShowExceptions and overwrites the rescue_action_in_public method.

Lanyon is a good friend of Jekyll, the static site generator, and transforms your website into a Rack application.

Health check library for ane rack specific apps

A Ruby gem for concise, behavior-first REST API specs backed by Rack::Test and RSpec.

Provides an /ping endpoint for Rack health check, that doesn't get logged.