GlobeXplorer API

From their site: We offer instant metered Internet access to the world's largest aerial, satellite, and map image database, available in a range of customizable subscription packages. Our software development kit makes it simple to integrate our content into Web sites, and our flexible API's allow customers to incorporate a variety of complimentary information, such as property information, street maps, and parcel maps. We also sell extensions for mapping software and off-the-shelf CD image products. Additionally, our engineers can create and install custom applications to incorporate our content into virtually any business environment.