europages - More than a simple directory, Europages, the directory of European companies is a professional portal that encourages business-to-business exchanges. Europages is the business directory leader!
Clearbit - Clearbit provides Business Intelligence APIs
kompass - Kompass business directory: Access to more than 35 million companies in more than 70 countries. A unique tool to find new prospects and clients
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Enantio - Find market opportunities and business trends for any product in all countries.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.