DuckDuckGo Tracker Radar
As the blog post notes, DuckDuckGo Tracker Radar was created because the company wasn’t satisfied with existing block lists. They found that many were manually created and often “stale” without new trackers being added. But Tracker Radar is continually updated and tested.
Because it’s open source, developers can use it to create their own block lists, and researchers can use it in their studies of corporate surveillance.
DuckDuckGo Tracker Radar is built into the company’s privacy browser on iOS and Android, and also included in its Privacy Essentials browser extension.