Based on our record, Clearbit Connect seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
If you're not into LinkedIn, you can certainly email them too. Here's a cool extension: https://connect.clearbit.com/. Basically, it'll let you find any email within a specific company (e.g., a recruiter at XYZ company). - Source: Reddit / 4 months ago
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
Hunter - Find all the email addresses related to a domain
DiscoverOrg - DiscoverOrg is an IT sales intelligence platform providing technology marketers access to data, IT org charts, and real time projects.
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LinkedIn Sales Navigator - Sales tool for LinkedIn users.