Free HyperCosm exporter for SketchUp

On http://hypercosm.com/download/teleporter/sketchup/index.html you can download a free (Windows-only) exporter for SketchUp 5 or 6 to export models for the Hypercosm player. With this plug-in for web browsers, people can interactively view your model from SketchUp, without the need to open a file or have SketchUp installed.

Not for Linux or Mac.
Also available for 3ds max.
Also available as a non-free Pro-version.