Adblock Plus

Adblock Plus (ABP) is a free and open-sourcebrowser extension for content-filtering and ad blocking. It is developed by Eyeo GmbH, a German software company. The extension has been released for Mozilla Firefox (including mobile), Google Chrome, Internet Explorer, Microsoft Edge, Opera, Safari, Yandex Browser, Samsung Internet, and Android.

In 2011, Adblock Plus and Eyeo attracted considerable controversy over its "Acceptable Ads" program to "allow certain non-intrusive ads" (such as Google Ads) to be allowed under the extension's default settings. While participation in the whitelisting process was free for small websites, large advertising companies were required to pay a fee in order for their ads to be whitelisted.