ZoomInfo
ZoomInfo is the data incumbent that built the enterprise B2B contact and company database category, went public on Nasdaq in 2020 (ticker: GTM), and has spent the years since defending its position from Apollo’s aggressive PLG expansion and Clay’s waterfall enrichment architecture. The company acquired Chorus.ai in 2021 for $575M to add conversation intelligence, and has continued building toward a full go-to-market platform. As of April 2026, ZoomInfo has the deepest enterprise data asset in the category — particularly for direct dials and intent signals at the Fortune-5000 level — but its price-to-value ratio versus Apollo has never been harder to justify for companies under $100M in revenue.