MARCOM Robot Data Enrichment Engine - Get more accurate data about your prospects, leads and customers with the Data Enrichment Engine.

Profile Hopper - Chrome Extension to Growth Hack LinkedIn

Statlistics - Statlistics is a list management and brokerage firm specializing in business and consumer list solutions.

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 Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.

Sheetsu - Turn Google Spreadsheet into API