LinkedIn Sales Navigator for Gmail - Rich contact profiles inside Gmail
Toby for LinkedIn - Save yourself needless clicks and your precious time & See company info without exiting the profile pageSimple as that
Clearbit for Salesforce – Lite - Rich data on every record in Salesforce for free!
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Clearbit - Clearbit provides Business Intelligence APIs
Profile Hopper - Chrome Extension to Growth Hack LinkedIn