Why ranked: Its own site says: “Verified B2B data: 515M+ contacts, 132M in the US, and 26 buying signals.” We placed it 2nd of 5 on fit for this task. Free tier; paid from Starter $37.45/mo, billed yearly.
Why ranked: Its own site says: “Cognism is a leader in premium sales intelligence, setting a new standard for data quality and compliance, trusted by over +4000 customers worldwide.” We placed it 1st of 5 on fit for this task. No public price (sales-led).
Why ranked: Its own site says: “Apollo is the AI sales platform rebuilt as one connected AI GTM system: data, intelligence, and execution for the entire go-to-market motion.” We placed it 3rd of 5 on fit for this task. Free tier; paid from $49/seat/mo (billing period unconfirmed).
Why ranked: Its own site says: “ZoomInfo is the #1 GTM Platform: Marketing and sales AI plus the best B2B data.” We placed it 4th of 5 on fit for this task. No public price (sales-led).
Score 5.6/10Paid from: From $34/month as listedFree tier: UnverifiedLast verified 2026-10-13
Why ranked: Its own site says: “Hunter is the leading solution to find and verify professional email addresses.” We placed it 5th of 5 on fit for this task. No free plan confirmed; paid from From $34/month as listed.