AllPages - Searchable "yellow pages" directory for all the US States.
Factiva (subscription-based) - Offers a collection of business intelligence and news sources, and powerful searching to provide customers with relevant information to inspire their business decisions.
Kellysearch - B2B product search engine to find US industrial goods and services suppliers.
Kompass - Access information on millions companies, key product and service references, executive names, trade and brand names all over the world.
Manta - Gives users access to data and analysis from some of the world's leading business publishers. Search for business listings, profiles, and reports.