LeadFuze uses third party data partners and in-house crawling to aggregate, match and verify real-time company info, emails, mobile numbers, social profiles and more.
They have a cool feature called FuzeBot, which can be set on autopilot and drip new contacts into your CRM as it finds them.
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.