FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Ampliz Sales Buddy - Data to power your business
Snov.io - More leads. More sales. More revenue.
D7 Lead Finder - Find B2B Leads for your business in any industry across all countries. Receive thousands of contacts in just a few minutes, giving you the data you need to make your business work.