Newest version just released.
Developed for the conceptual stages of design, Google SketchUp is a powerful yet easy-to-learn 3D modeling software tool that combines a simple, yet robust tool-set with an intelligent drawing system that streamlines and simplifies 3D design. From simple to complex, conceptual to realistic, Google SketchUp enables you to build and modify 3D models quickly and easily. Are you remodeling a kitchen, landscaping your back yard or adding a deck to your home? Google SketchUp makes it faster, easier and a lot more fun. From simple to complex, from conceptual to realistic, Google SketchUp helps you see your vision before you build it.
HomePage http://sketchup.google.com/
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Direct Download http://dl.google.com/sketchup/gsu6/GoogleSketchUpWEN.exe