VisitorTrack - Cloud Based Affordable Biometric Visitor Management System To Eliminate Maintenance & Expense of ID Cards & Printers, Replace Paper Logs & Sign-In Sheets.

Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.

BuiltWith - Find out the technology behind websites

Adobe Audience Manager - Adobe Audience Manager is a data management platform that integrates online and offline data to deliver a unified view of all your audiences

Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).

Google Audience Center - 3 votes and 6 comments so far on Reddit