delocalize provides localized date/time and number parsing functionality for Rails.

Prototype

Ruby

Rails

Any gem

Or, you can test your Rack application (or Sinatra, or Rails, or Merb) using arbitrary HTTP client libraries, to check interoperability.

Rfm brings your FileMaker data to Ruby with elegance and speed. Now your Ruby scripts and Rails applications can talk directly to your FileMaker server with a syntax that just feels right.

In a nutshell, Bowline lets you build cross platform desktop applications with Ruby, HTML and JavaScript. The idea is to make building desktop apps as simple (and fun) as building Rails websites.

The Holy Grail of testing for front-end development; execute browser-less, console-based, javascript + DOM code right from within your Rails test suite.