Firefox

: Firefox blocks third-party trackers, social media trackers, and fingerprinters by default. Its Total Cookie Protection isolates cookies to the site where they were created, preventing cross-site tracking.

: This standout feature allows users to separate their browsing (e.g., Personal, Work, Shopping) into different "containers" so that cookies from one do not leak into another. firefox

: For quick, ultra-private browsing, Firefox Focus automatically wipes your history and cookies the moment you close a session. Recent Developments and Challenges (2025–2026) : Firefox blocks third-party trackers