Norbert is an intelligent lead generation tool that can find anyone's corporate email address and enrich it with data that drives conversion.
It won't blow you away but the accuracy is pretty good, and it has a clean user interface. It's one of the few platforms that doesn't require a subscription - you just pay for however many emails it finds.
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.