Forbes Lists: Companies
Lists of companies include the 200 best small companies, the Private 500, America's 500 Leading Companies, the Platinum 400, the International 800, and Best Places. Listings contain contact information, web addresses, basic revenue, assets, market value, and stock price and earnings information. Searchable.
ThomasNet (formerly Thomas Register)
ThomasNet is a directory containing over 72,000 product headings and 170,000 U.S. and Canadian manufacturers. It allows you to search by product, company or brand name. Provides you with basic contact information as well as links to websites and e-catalogs. Free registration required for some features.
Did we miss one? Let us know in the comments.