http://www.openspace3d.com/lang/en/ OpenSpace3D (made by French Guys ;)
(Works in English too)
Make your own interactive World!
It's like Virtools but free!
You can make excecutable visible on any Navigators without any Knowledge of programming!
But some clicks are necessary ;)

A special plug for Sketchup or Blender for import 3D Models! http://www.openspace3d.com/lang/en/support/
So for Moi files ;)