Demandbase - Bizo
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
HubSpot ABM Software - HubSpot ABM Software is a smart enterprise-based tool for dealing with accounts and sales marketing to bring all the accounts collaborations on one centralized platform.
Clearbit - Clearbit provides Business Intelligence APIs
6sense - 6sense is a B2B predictive intelligence engine for marketing and sales.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.