Slintel specializes in leveraging technographic data to infer buying intent. It, helps uncover the few active buyers in their target market. Slintel evaluates a ton of data points and analyzes factors such as buyer journeys, technology adoption patterns, and other digital footprints to deliver market & sales intelligence.
From what we've heard, Slintel achieves a very high accuracy rate for direct phone numbers.
UpLead is a B2B prospecting platform that provides B2B contact & company data. Features include real-time email verification, contacts in over 200 countries, 50+ search criteria, technology tracking, account based marketing, competitor intelligence, email pattern intelligence, social profile links, Salesforce & 12 other CRM integrations, and a robust API.
We like the intuitive user interface, and it's also nice how they flag contacts that are potentially not up-to-date, so you don't waste your credits!