Coresignal
Stands out: A real data API plus MCP at $49 Mini: this is enrichment infrastructure, not a Chrome overlay.
Watch out: Mini is 2,500 credits. Starter is $199 and Pro $499. Treating $49 as production volume will fail in week two.
Not the right fit for
- Recruiters who only want a LinkedIn Chrome finder
- Teams that need a sequencer
- Buyers who need ZoomInfo-the-UI
People Data Labs
Stands out: A free API sandbox, then self-serve Pro with contact data, premium fields and CSV enrichment on monthly or annual terms.
Watch out: Free hides email, phone and address. Annual saves 20% but is paid up front. Bulk data licenses are Enterprise and custom priced.
Not the right fit for
- Non-technical users who need a prospecting UI
- Buyers who need emails on the free plan