.KML file extension

Google Earth is a program that enables you to enjoy 3D views of the globe. You can explore cities, buildings and structures with the 3D buildings layer, see distant galaxies, view constellations, see 3D models of spacecraft and zoom into 360-degree photos from past space missions... (more)

The program works with the following extensions: kml, kmz and eta

It's a desktop search application that provides full text search over your email.

Google Earth Pro is a shareware program for earth-mapping learners of all ages.

Google Desktop Search, info when you want it, right on your desktop.

PoiEdit is a program for managing your POI (Places of Interest) files.

ArcGIS Explorer Desktop is a GIS viewer that gives you an easy way to explore.