Geographic

Google Maps is a free web-based mapping application. Shows aerial photos, traffic, directions and 360 degree view of certain streets in large cities.

MapQuest helps you to find places. Get maps, driving directions, and gas prices. View satellite maps and aerial photos.

Multimap offers street-level maps of the UK, Europe and the USA and road maps of the whole world. Get travel directions and aerial photographs.

Yahoo! Maps offers driving directions, satellite view and real-time traffic information.

Explore the Earth with interactive maps, directions and traffic, satellite and aerial images, bird's eye view, 3D maps and 3D cities.