V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Leadspace - Leadspace uses targeting and predictive scoring to find the most accurate B2B leads for your business. Visit our site and view a demo to learn how it works.
Adobe Audience Manager - Adobe Audience Manager is a data management platform that integrates online and offline data to deliver a unified view of all your audiences
6sense - 6sense is a B2B predictive intelligence engine for marketing and sales.
Clearbit - Clearbit provides Business Intelligence APIs
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.