Apollo.io
B2B contact database and sales engagement.
free tier · price unverifiedWeb
A strong alternative: listed as runner-up for find and enrich leads; runner-up for run cold email outreach.
Why use it
A large B2B contact database with sending tools, and a free plan.
Skip it if you need data from many sources at once; Clay pulls from more.
Pricing
Free plan (permanent). Basic reported $49/mo yearly ($65 monthly), Professional $79/mo yearly ($99 monthly). Check the official site.
Where Apollo.io shows up
Alternatives
Runner-upClayclay.com
Lead enrichment from many data sources with AI research.
free tier · price unverifiedChecked Oct 14, 2026
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