wxSU is a free, open source plugin for Google SketchUp that extends the SketchUp API with the capabilities of wxRuby. wxSU bundles wxRuby to provide a cross-platform, pure Ruby solution for implementing GUI dialogs in your SketchUp plugins.
The SketchUp API provides GUI dialog support using dynamic HTML via an embedded web browser. wxSU gives you an alternative way to create dialogs for your plugins. The wxSU interface layer allows wxRuby and SketchUp to work together seamlessly.