PersistIQ - It takes multiple touch points before a lead engages. PersistIQ automates the tedious parts while preserving the key human elements of sales
AeroLeads - AeroLeads is a lead generation software which finds prospects with email and phone number.
Dux Soup - Dux-Soup is a lead generation tool for LinkedIn.
Hunter - Find all the email addresses related to a domain
CloudSponge - Companies from every industry use CloudSponge’s Contact Picker to get access to their users’ address books.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.