Link – Explore the World in 3D
The more we see of ArcGIS Explorer the more we can see its power beyond just a 3D visualization tool. To be able to take ArcGIS Server, ArcIMS, WMS, ArcWeb Services and other types of GIS datasets and display them all in one program really speaks volumes of what ESRI is trying to accomplish here. ArcGIS Explorer seems to be the product that Google Earth should have been.