AeroLeads - AeroLeads is a lead generation software which finds prospects with email and phone number.
Hunter - Find all the email addresses related to a domain
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Lusha - Search less. Sell more.
LeadFuze - B2B Lead Generation & Sales Prospecting Software.
LeadGibbon - Access millions of business contacts, with verified email addresses and phone numbers