Octopi / Compare / Best enrichment tools
Roundup
Best data enrichment tools (2026)
Data enrichment fills in the gaps on a list of companies or people. Here are the tools worth knowing in 2026, and where a local-first, source-cited option fits.
How to choose
Coverage vs control
Big cloud datasets have broad coverage; owning your keys + live research gives control and freshness.
Privacy
If a list is sensitive, a local-first tool avoids uploading it to a cloud service.
Verification
Prefer tools that verify (especially emails) and cite a source, not just guess.
| Tool | Best for | Type |
|---|---|---|
| Octopi | Local-first, source-cited enrichment on a Mac; BYO keys | Free Mac app |
| Clay | Cloud tables + multi-provider waterfalls | Cloud, free + paid plans |
| Clearbit (now HubSpot Breeze) | Enrichment built into HubSpot | HubSpot subscription + credits |
| Apollo.io | Contact database + enrichment + outreach | Cloud, free + paid plans |
| Hunter.io | Work-email finding & verification | Cloud, freemium |
Published by Octopi. Comparisons are kept factual; check each tool’s own site for current details. Other names are trademarks of their owners.
Where Octopi fits
Local-first
Enrich sensitive lists without uploading them.
Not just guesses
With a verifier key, each email gets a status: valid, invalid, catch-all or unknown.
Auditable
Every value links to its source.
Your providers
Bring your own keys and waterfall across them.
Questions
What’s the most private enrichment tool?
A local-first one like Octopi keeps your list on your Mac instead of uploading it to a cloud dataset; lookups go directly to the providers you choose.
Which verifies emails?
Hunter.io verifies with its own service. Octopi verifies through the provider you connect (ZeroBounce, NeverBounce or MillionVerifier) and gives each address a status.
Can I bring my own data providers?
With Octopi, yes — add your own API keys and it waterfalls across them.
Is this roundup neutral?
We make Octopi; it’s our honest view, kept factual, with links out to judge for yourself.
Related
Enrich a list, privately
Download Octopi free and enrich companies or contacts on your Mac.
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