Apologies for the long overdue post. Check out:
Some Q&A that you might be interested in.
Q. Is GermaniumWeb yet another 3D engine?
A. No. GermaniumWeb contains a 3D engine that is optimized for what it does. But it is not a general-purpose 3D engine like say openscenegraph.
Q. Is GermaniumWeb a Google Earth plugin wannabe?
A. No. GermaniumWeb is not intended to replace GE plugin. It is in fact a very good complement to GE plugin. You can think of GermaniumWeb as analogous to Google Earth for buildings.
Q. Why use a 3D plugin as opposed to say Java3D?
A. There is a good reason why some of the best 3D web applications out there are done using plugins. Nothing comes close to the user experience and performance of a native purpose-built plugin, especially when it comes to 3D.
Q. If I'm going to be using a plugin, why not X3D, or O3D, or <name your fav 3D plugin>?
A. GermaniumWeb is not a 3D engine or a scene graph. It encapsulates low-level stuff - like building representation, camera management, visibility logic etc. - so that you can concentrate on building useful and easy to deploy 3D in-building web applications.
So what are you waiting for? Start downloading and start coding already!