Clearbit - Clearbit provides Business Intelligence APIs
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
Lusha - Search less. Sell more.
LinkedIn Sales Navigator - Sales tool for LinkedIn users.
Datanyze - The sales prospecting tool powered by technology data