RocketReach provides real-time verified data for 450 million professionals across 17 million companies, worldwide.
RocketReach is very user friendly, and generally their data is high quality. We like that it marks personal emails so you can assess whether it is appropriate to contact that person there.
LeadGibbon allows you to discover new leads based on title, location, industry, and other firmographic data. You can export yout lists easily, or save them and share with your team. LeadGibbon is a great way to find decision-makers with purchasing power.
It's a no-frills tool, but we've heard it works very well! Use their extension to grab emails directly from Sales Navigator, and they will be deposited in a Google Sheet for you.