Apollo.io›Apollo.io› offers Website Visitor Identification

Website Visitor Identification matches site traffic against Apollo's database to reveal which companies, and for United States visitors which individual contacts, are browsing a website, along with the pages viewed and how often. It enriches those visitors with firmographic and technographic detail, applies intent scoring and ideal-customer-profile filtering, and can then route, alert, or automatically enroll the visitors into an outreach sequence.

Apollo makes company-level identification available on its free plan while contact-level identification requires an inbound add-on. The capability is documented as part of the platform's inbound lead conversion use case, where it feeds the same routing and sequencing features used for outbound.