Rack::Debug adds a middlerware interface to ruby-debug http://github.com/github/rack-debug

provides a simple endpoint for your rails app for a heartbeat client to connect to

JSON Schema based Rack middlewares

This is Rack middleware that makes your app compliant with the 'EU ePrivacy Directive'

SpeedTracer middleware for server side debugging

Streaming proxy for Rack, the rainbows to Rack::Proxy's unicorn.

Rack OpenTracing middleware

Middleware for logging requests to Readme's metrics API

RestClient on steroids ! Easily add one or more Rack middleware around RestClient to add functionalities such as transparent caching (Rack::Cache), transparent logging, etc.

Ronn-NG builds manuals in Unix man page and HTML format from Markdown. Ronn-NG is a modern, maintained fork of the original Ronn.

Collector gem for snowfinch.

Spar uses Rack and Sprockets to provide an asset development environment very similar to the asset pipeline found in Rails. It also has built in deployment tasks for deploying your entire site to AWS S3 and Cloudfront.

SPARQL Implements SPARQL 1.1 Query, Update and result formats for the Ruby RDF.rb library suite.

Rack middleware which will look up your assets manifest file and redirect a request with no digest in the file name to the version with digest in the file name.

Simple router for web applications

Treasure Data logging library

This gem provides request authentication via [HMAC](http://en.wikipedia.org/wiki/Hmac). The main usage is request based, noninteractive authentication for API implementations. Two strategies are supported that differ mainly in how the authentication information is transferred to the server: One header-based authentication method and one query-based. The authentication scheme is in some parts based on ideas laid out in this article and the following discussion: http://broadcast.oreilly.com/2009/12/principles-for-standardized-rest-authentication.html The gem also provides a small helper class that can be used to generate request signatures.

Use Watir (http://github.com/watir/watir) in Rails.

Adds a toolbar to your rails app that directs your clients to test stories that have been marked as 'delivered' in Pivotal Tracker

Scenario-based WebSocket black-box testing