GlitchyGem

To install go to http://glitchyapp.com and create an account. Click edit profile and save your API Key. Create a file in you config/initializers directory called glitchy.rb and put this in it:

GlitchyGem.configure do |config|
  config.api_key = "YOUR_API_KEY"
end

This gem will work with Rails 2.3.x and up