Clearbit - Clearbit provides Business Intelligence APIs
Optmyzr - Optmyzr AdWords Tools. Optimization Solutions, Quality Score Tracker, Landing Page Checker, and more. Free Trial Available.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Freshmarketer - An all-in-one CRO suite.
LinkedIn Sales Navigator - Sales tool for LinkedIn users.
Pathmatics - Pathmatics provides actionable display and mobile intelligence to many brands, agencies, publishers, and advertisers.