Astrails-Safe is a simple tool to backup databases (MySQL and PostgreSQL), Subversion repositories (with svndump) and just files. Backups can be stored locally or remotely and can be enctypted. Remote storage is supported on Amazon S3, Rackspace Cloud Files, or just plain FTP/SFTP.

Websocket interface on Rack Hijack w/ Rails support

Convenient API blueprint testing with Apiary Dredd for Rack applications.

Secure, lightweight Rack middleware for Amazon Simple Notification Service (SNS) endpoints. SNS messages are intercepted, parsed, verified, and then passed along to the web application via the 'sns.message' environment key. Heroic::SNS has no dependencies besides Rack (specifically, the aws-sdk g...

Drop-in image thumbnailing middleware for your Rack stack (Merb, Sinatra, Rails, etc).

Pico web framework for building API-centric web applications. For Rack applications or Rack middleware. Around 250 lines of code. Check [jellyfish-contrib][] for extra extensions. [jellyfish-contrib]: https://github.com/godfat/jellyfish-contrib

David is a CoAP server with Rack interface to bring the illustrious family of Rack compatible web frameworks into the Internet of Things.

A Sinatra extension for setting and showing Rails-like flash messages. This extension improves on the Rack::Flash gem by being simpler to use, providing a full range of hash operations (including iterating through various flash keys, testing the size of the hash, etc.), and offering a 'styled_fla...

Simple lib to track events in Mixpanel service. It can be used in any rack based framework.

Logtail integration for Rack

Escher authorization for rack based http servers with ease in a form of middleware

RackStep is (yet another) micro ruby framework for web development.

Instrumentation for Rack::Ratelimit

Rack hook which fires after the socket to the client is closed.

A rack utility that will create and save images (pngs) for a part of your web page's current dom. These images become available as public '.png' resources in the rack application. Currently shutterbug supports HTML, SVG and Canvas elements.

A Test Kitchen Rackspace driver

Timber integration for Rack

Smoggy Rackspace API

This ripl plugin provides a console for rack apps.

Rack middleware for thrift services