- upper left: Google Earth view
- upper right: Google Map view. You can toggle traffic information as well as street view information as overlays.
- lower left: Google Streetview
- lower right: Microsoft Birdsview
Other features include navigation in the Google Earth or Google Maps view while other views are adjusted accordingly, controlling of road overlay in earth view, buildings overlay in earth view, traffic overlay in maps view etc. You can easily share the current view with others.
Test drive Gaiagi Driver (Google Earth plugin required; you will be asked to install it if you have not done so).