Demografy - Demografy is a SaaS platform that uses AI to predict customer demographics from names. It provides full coverage, accuracy estimate before purchase and work with even masked names enabling privacy and GDPR-compliance.

fruux - Free service that takes care of your contacts, calendars and more so you don't have to.

Eyeota - Eyeota is a audience data supplier provides marketers with the data they need to reach the right online audiences.

FullContact - Put the power of full contact information into your web or mobile apps.

DTScout - DTScout provides global behavioural and demographic audience data.

Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.