Cardhop - The Mac contacts app you'll want to use.
AdShield.ai - AI-powered placement exclusion lists for Google Display campaigns
The Contact Guru - Managing your contact list so you don't have to
Bromite - Bromite is Chromium plus ad blocking and privacy enhancements; take back your browser!
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.
Ads-Shield - Ads-Shield: Content Blocker is an all-in-one ad-blocking app that stops all kinds of ads in your browser, Facebook, YouTube, and even other third-party apps.