title: About the 3D UI engine in open-source
body: <p>There are many 3D UI engines in SourceForge and other opensource forum, I would like know which is best one you used?</p>
  
  <ol>
  <li>Support D3D in Windows</li>
  <li>Provide UI Builder tool</li>
  <li>Support Auto Layout</li>
  <li>Easy to do localization</li>
  </ol>
  
  <p>thanks.</p>