urbandictionary.com is powered by...
 |
Heroku, a simple and powerful cloud application platform. |
 |
Ruby on Rails, an open source web framework. (Even though Urban Dictionary's URLs still end in .php.) |
 |
Pivotal Labs, a software consultancy that specializes in Ruby on Rails and Agile Development practices. |
 |
Pivotal Tracker, an agile project management tool. |
ruby rubymine test driven development jasmine haml
