Honest, sourced comparisons against the biggest names in B2B data. We tell you where they win too, so you can pick what actually fits.
Apollo is a full sales platform you log into. PersistData is the data layer you call.
ZoomInfo is the enterprise GTM platform on five-figure annual contracts. PersistData is the self-serve data API.
Lusha is a brand-name, extension-first prospecting tool sold per seat. PersistData is metered data without the seat.
Clay is a powerful spreadsheet that orchestrates 150+ data providers. PersistData is the predictable, pay-for-found endpoint underneath.
RocketReach is a large owned database with a real API gated behind its top tiers. PersistData puts the same pay-for-found model up front.
Cognism is premium, GDPR-first sales intelligence for European outbound. PersistData is the low-friction data API with no platform fee.
Seamless.AI is a big-database, seat-based prospecting tool with real-time lookups. PersistData is the server-side, pay-for-found alternative.
Hunter.io is an owned email-finder index with tools you log into and a real free tier. PersistData is the server-side data layer you call.
Clearbit no longer exists as a standalone product: its enrichment now lives inside HubSpot CRM, behind a paid seat, as Breeze Intelligence; PersistData is the standalone, API-first data layer you call.
LeadIQ is a LinkedIn-native, seat-based prospecting tool you log into and capture from. PersistData is the server-side data layer you call.
UpLead is a verified-contact B2B database with a Prospector web app, a Chrome extension, and CRM workflow you log into. PersistData is the server-side data layer you call.
Wiza is a LinkedIn-native Chrome extension and enrichment tool you log into to reveal and bulk-export prospects. PersistData is the server-side data API you call without ever touching your LinkedIn session.
Kaspr is a LinkedIn Chrome extension you run on your own logged-in session. PersistData is the server-side data API you call.
Lead411 is an intent-rich sales-intelligence platform you log into, with a Chrome extension and an API bolted on at the upper tiers. PersistData is the API-first data layer you call.
Proxycurl was a developer-first LinkedIn enrichment API you called server-to-server, until LinkedIn's lawsuit forced it to shut down in July 2025; PersistData is the operating, server-side data layer you can call today.