Business.com

Business.com is an Internet search engine and web directory targeted primarily to an executive and corporate management audience. The company of the same name also operates a pay per click advertising network focused on the business-to-business market.

Business.gov

Business.gov is sponsored by the U.S. Small Business Administration to provide small business owners with access to federal, state and local government resources from a single access point. The site provides innovative information services that save time and money, engage citizens to participate, and enable collaboration across all levels of government. Business.gov creates a dialogue among business owners and the organizations serving them, making government resources and information more accessible to the nation's small business community.

Hoover's

Hoover's, Inc. is a business research company that has provided information on U.S. and foreign companies and industries since 1990. Since 1993, the company has made its information available on its website www.hoovers.com.

Kellysearch

Free business-to-business search engine listing US suppliers of industrial and manufacturing products and services.

Super Pages

United States white and yellow page listings. Includes links to directories for other countries.

Thomas Register

The Thomas Register of American Manufacturers, known as the "big green books" and "Thomas Registry", is a multi-volume directory of industrial product information covering 650,000 distributors, manufacturers and service companies within 67,000-plus industrial categories. It was first published in 1898 by Harvey Mark Thomas as Hardware and Kindred Trades. The company stopped publishing its print products in 2006 due to declining circulation as Internet searches eroded the products' usability.

Yellowbook

Yellow and white pages information, searchable by business, people, reverse lookup, and distance.

Yellow Pages

Searchable database lists more than two million Australian businesses by name, product or service type, as well as by location.