SaaSiter Contacts Importer - Allow users to import contacts into their system.
PersistIQ - It takes multiple touch points before a lead engages. PersistIQ automates the tedious parts while preserving the key human elements of sales
CloudSponge - Companies from every industry use CloudSponge’s Contact Picker to get access to their users’ address books.
Skrapp.io - Skrapp.io is the easiest solution to extract leads from Linkedin. In few seconds, you can find email addresses and launch your email prospecting project.
AdiInviter Pro - The ultimate contacts importer and tell-a-friend system for your website.
Clearbit - Clearbit provides Business Intelligence APIs