Some popular satellite map viewers include Google Maps, MapQuest, Bing Maps and Flash Earth. All of these websites offer free viewing of satellite map imagery of any location or address.
Google Maps, Mapquest and Bing Maps all allow users to input one, two or three addresses and view satellite imagery and directions. Flash Earth is an aggregate site that offers satellite map imagery from Google, MapQuest, Bing, NASA Aqua, NASA Terra and ArcGIS, allowing users to toggle through them.
Satellite map imagery is also available for purchase through satellite companies such as GeoEye, DigitalGlobe and Spot Image. Private access to satellite feeds from these companies may cost hundreds or thousands of dollars.