PersistIQ - It takes multiple touch points before a lead engages. PersistIQ automates the tedious parts while preserving the key human elements of sales
Invoca - Call tracking & analytics software
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.
CallTrackingMetrics - Know who is calling and how they found you. Maximize the return on your advertising.
Clearbit - Clearbit provides Business Intelligence APIs
Marchex - Marchex is a mobile advertising analytics company that connects online behavior to real-world, offline actions.