The enterprise standard for B2B lead data. It features high-quality direct dials, intent signals, and technographics. However, it is notoriously expensive, requires long-term contracts, and many users find the data quality for small-to-midsize businesses (SMBs) doesn't justify the $15k+ entry fee.

An AI-powered search engine for finding B2B contacts. While it claims real-time verification, users frequently report high bounce rates (20-30%) and difficulty with their 60-day cancellation notice period. It acts primarily as a data provider, requiring external tools for actual outreach.