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Mozilla Firefox

Open-source with strong privacy features and advanced customization.

Last updated: October 2026

About Mozilla Firefox

Mozilla Firefox stands as the last major independent browser, powered by its own Gecko engine rather than Chromium. This independence allows it to prioritize user agency over corporate interests, offering a browsing experience that is open-source, transparent, and highly customizable.

Privacy is woven into the core. Features like Enhanced Tracking Protection block invasive trackers by default, while built-in container tabs (on by default since Firefox 153) let you isolate your digital lives—keeping Facebook data away from your banking, for example. Its customization engine is unmatched, allowing you to completely overhaul the UI with CSS if you choose.

While it may occasionally trail Chrome in raw JavaScript benchmarks, the difference is rarely noticeable in daily use. The extension library is mature and robust. For users who value the health of the open web and want a browser that serves them rather than advertisers, Firefox is the definitive choice.

Features

  • Private search engine defaultSupported
  • Private AI chatNot supported
  • Blocks 3rd-party trackersSupported
  • Blocks targeted adsNot supported
  • Blocks cookie consent pop-upsNot supported
  • Blocks targeted ads on YouTubeNot supported
  • Built-in password managerSupported
  • Blocks email spy pixelsSupported
  • One-tap history clearingSupported
  • Data broker removal servicePaid
  • Identity theft restorationNot supported
  • Built-in VPNSupported
  • Workspaces / Tab groupsSupported
  • Split screen viewSupported
  • Vertical tabs supportSupported
  • Anti-fingerprinting protectionSupported
  • Native ad blockerNot supported
  • Supports Chrome/Firefox extensionsSupported
  • Syncs across devicesSupported
  • Distraction-free reader modeSupported
  • Tor network integrationNot supported
  • AI agent that browses for youNot supported
  • All AI can be switched offSupported
  • Container tabs for separate loginsSupported
  • Built-in page translationSupported

Recommended extensions for Mozilla Firefox

All extensions
uBlock Origin icon

Ad blocker

uBlock Origin

Blocks ads and the trackers that come with them on every site.

Read review
Bitwarden icon

Password manager

Bitwarden

Fills logins, creates strong passwords and syncs your vault across browsers.

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Makes YouTube less annoying, from sponsor segments to clickbait.

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Consent-O-Matic icon

Cookie banners

Consent-O-Matic

Answers cookie banners for you, with the choices you set once.

Read review

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