Google aquired @Last a few months ago. @Last were the developers of SketchUp. Yesterday Google has started offering a new free version of SketchUp called Google SketchUp. It has some limitations but is still well worth having if you don't already use the Pro version. (Google are still selling the full version but have renamed it SketchUp Pro).

Note that you can use Google SketchUp to create content for Google Earth.

Regards, Ross