Truss Router is a modular Rack Router for Truss

A sparkling web framework Rack based

Simple Rack Compatible Web Server in Ruby

Metrics library for Rack applications using a preforking http server (i.e., Unicorn)

Verb is Rack middleware that serves RHTML files.

Easy performance analytics for your Rack/Rails app!

Wall is rack middleware that blocks requests

A warden strategy for easy OAuth2 rack based authentication

Static Assets Middleware is useful.

A rack middleware health check

Whisky is a micro-framework built upon Rack.

Rack middleware for connecting to WhenAUser

A rack middleware and a handful of rake tasks to sync your translations between webtranslateit.com and gettext_i18n_rails application

Rack middleware for your RestPack web apps

Scaleable caching framework with 100% cache coverage, async server instances and sync worker instances supporting rack applications like Rails.

Middleware that injects upstream server info into the response

Rack middleware that writes issued certificates to disk

Cache Control Image Assets in rails development

CloudServers Api based on RightScale's gem

Simple Rack middleware for use with Sabayon.