A/Bingo is a Ruby on Rails A/B testing framework written as a plugin. It is an extraction from Bingo Card Creator, where it is used in production. Key features:

• Test display or behavioral differences in one line of code
• Measure any event as a conversion in one line of code.
• Eliminate guesswork: test for statistical significance in one line of code.
• Blazingly fast, with minimal impact on page load times or server load.
• Written by programmers, for programmers. Marketing is an engineering discipline!

Simple syntax to start a test:

  <% ab_test("login_button_test", ["/images/button1.jpg", "/images/button2.jpg"]) do |button_file| %>
    <%= image_tag(button_file, :alt => "Login!") %>
  <% end %>

Track any arbitrary event as a conversion

  def login
    #some business logic goes here
    bingo!("login_button_test")
  end