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Businesses

Listings
Offers nationwide online yellow pages, white pages, government listings, driving directions, and maps.
http://www.dexonline.com/
provides links to popular international search services for physical and email addresses and telephone numbers.
http://www.people-search-global.com/
community-based approach to finding someone by posting search messages.
http://www.peoplesite.com/
Email data quality services for businesses: email append, email change of address (ECOA), and email list hygiene.
http://www.towerdata.com
find businesses in your area code.
http://www.trueyellow.com/
search or browse categories for U.S. businesses.
http://www.superpages.com/
search results for businesses by name, category, and location from multiple sources.
http://www.yellow.com/
searches by city, name, and business type.
http://www.yellowpages.com/
offers listings searchable by region, category, or business name.
http://www.smart411.com/