Lead411 provides comprehensive and accurate information about contacts and companies available in the marketplace. They have over 450M contacts, within 20M companies worldwide. Through targeted filters, and sales intelligence data points, customers are able to view complete contact data profiles and find growing companies that are more likely to be in a buying cycle for adding services/solutions.
Their CRM integration is seamless, and this makes a huge difference if you are regularly importing leads.
LeadFuze uses third party data partners and in-house crawling to aggregate, match and verify real-time company info, emails, mobile numbers, social profiles and more.
They have a cool feature called FuzeBot, which can be set on autopilot and drip new contacts into your CRM as it finds them.