Contacts APIs

Popular first highlights editorial picks, then ranks providers by monthly downloads of their official SDKs on npm and PyPI (measured 2026-10-18). Others follow A–Z.

Clearbit

392.8K SDK downloads/moView API profile →

Act! 365

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Act! Essentials

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AddressFinder Australia

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AeroLeads

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Anymail finder

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Cliengo

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Cloze

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Coldcrm

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Contacts+

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Contacts+

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Datagma

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dropcontact

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Folk

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FullContact

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GetProspect

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Google Contacts

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Hunter

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Instant Contact

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Interseller

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Lead Score by Zapier

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Lusha

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MadKudu

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mails.wtf

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Overpass

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PeopleSQL

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Pobuca Connect

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RevenueBase

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ReviewPoint

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Sansan

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Sidekick

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Skrapp

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tomba.io

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VoilaNorbert

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Counts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.