What are Shockwave3D, Metastream, Atmosphere, are they VRML ?
These are all formats for 3D content. VRML itself is the International Standard for 3D content and was created and defined (and continues to be updated) by a broad cross-section of the 3D industry. Each of these formats is a proprietary format owned by a particular company. They are NOT compatible with the VRML standard and the future of these formats is entirely dependant on the companies that own them. Hence to use any of these formats you need to have both the companies specific authoring package and a specific webrowser plugin only available from that company.
