Cardhop - The Mac contacts app you'll want to use.
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.
The Contact Guru - Managing your contact list so you don't have to
BLOCK THIS! - Block This 3.0 is a FREE and Open Source ad blocker for Android that works in all apps and browsers!
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.
Ad Skipper for YouTube - Ad Skipper for YouTube – Skip and Mute YouTube ads is a powerful Android tool specially designed for YouTube streaming lovers who want to enjoy the high-quality fast streaming experience without any irritation from ads.