Gurby is a library to write simple, beautiful GUI code. It uses WxRuby for the widgets, and borrows syntax ideas from _why's excellent Shoes project.

Gurby separates style (how to arrange the widgets on the screen) from the main content (what widgets are there).

Gurby.app do
  style do
    id 'my text' do
      proportion 1
      grow :expand
    end
    id 'my button' do
      proportion 0
      align :right
    end
  end

  frame :title => 'My App' do
    vertical do
      text :id => 'my text', :style => :multiline
      button :id => 'my button', :label => 'a button'
    end
  end
end 

Gurby is implemented using blox, a library for making such domain specific languages very easy to implement.