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.

Rack middleware for rate-limiting incoming HTTP requests.

Timber integration for Rack

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

Smoggy Rackspace API

The Rack Fast Escape library, by The Rubyists, LLC

This ripl plugin provides a console for rack apps.

A gem to extend knife-rackspace allowing cloud load balancer management.

Rack Upload handler with Nginx Upload Module support

A Test Kitchen Rackspace driver

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.

Logtail integration for Rack

Small rack middleware to block your site from unwanted vistors. A little bit more convenient than basic auth - browser will ask you once for the password and then set a cookie to remember you - unlike the http basic auth it wont prompt you all the time.

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

Handle race conditions in Rails JS feature tests caused by outstanding overlapping actions in your app, with rack middleware to let you wait for pending feature test actions to finish

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

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...

Rack session using redis. Corresponding to Rails :flash

Provides connection management for Rack applications using ActiveRecord.