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Head-to-head · Web Browsers

Mozilla Firefox vs Waterfox

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Mozilla Firefox #3 in Web Browsers 9.1/10 Free plan Free plan✓ 3 of 3 features Visit Firefox
Waterfox #9 in Web Browsers 8.5/10 Free plan Free plan✓ 3 of 3 features Visit Waterfox

Mozilla Firefox leads on 0 checks, Waterfox on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMozilla Firefox · 9.1/10
  • Free planboth

Mozilla Firefox scores higher on our rubric for web browsers: 9.1 against 8.5 out of 10; our editors rank them #3 and #9.

On tracking protection, Waterfox gives you Advanced where Mozilla Firefox offers Standard.

Mozilla Firefox is the better fit for open-source privacy-conscious everyday browsing. Waterfox is the better fit for open-source users wanting strong privacy controls.

  • Mozilla Firefox fits best

    Open-source privacy-conscious everyday browsing

  • Waterfox fits best

    Open-source users wanting strong privacy controls

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Side by side

Feature Mozilla Firefox 9.1/10 Visit ↗ Waterfox 8.5/10 Visit ↗
At a glance
Editor score 9.1 8.5
Ranking #3 in Web Browsers #9 in Web Browsers
Best for Open-source privacy-conscious everyday browsing Open-source users wanting strong privacy controls
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop, Mobile Desktop, Mobile
Platforms Windows, macOS, Linux, iOS, Android Windows, macOS, Linux, Android
Support Community, Docs Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Mozilla Firefox 3/3 · Waterfox 3/3
Built-in ad blocking ✓ ✓
Cross-device sync ✓ ✓
Open source ✓ ✓
Specs
Supported platforms Both Both
Browser engine Gecko Gecko
Tracking protection Standard Advanced
Extension support Own_store Not checked yet
Our review
Pros
  • Enhanced Tracking Protection and Total Cookie Protection
  • Available on Windows, macOS, Linux, iOS and Android
  • Syncs bookmarks, passwords, history and open tabs across devices
  • Advanced tracking protection with Standard, Strict, and Custom modes
  • Open source with built-in ad and tracker blocking
  • Syncs bookmarks, passwords, history, tabs, and preferences
Cons
  • Sync requires a Mozilla account
  • Extensions and themes use Mozilla’s own add-on store
  • No paid tier for additional browser features
  • No premium tier or payment options are offered
  • Synchronization depends on a Mozilla account and Mozilla Sync
  • No AI features are included
Our verdict

Mozilla Firefox is a free, open-source web browser for desktop and mobile users who want everyday browsing with built-in privacy controls. It runs on Windows, macOS, Linux, iOS and Android, using Mozilla’s Gecko rendering engine. Core…

Read the review →

Waterfox is a free, open-source web browser from BrowserWorks Ltd, based on Mozilla Firefox and the Gecko engine. It is designed for people who want detailed privacy controls alongside everyday browsing features. Available on Windows,…

Read the review →
  1. Mozilla FirefoxWeb Browsers 9.1Free plan
  2. WaterfoxWeb Browsers 8.5Free plan

Strengths and trade-offs

  • Mozilla Firefox — where it wins

    • Enhanced Tracking Protection and Total Cookie Protection
    • Available on Windows, macOS, Linux, iOS and Android
    • Syncs bookmarks, passwords, history and open tabs across devices

    Where it doesn't

    • Sync requires a Mozilla account
    • Extensions and themes use Mozilla’s own add-on store
    • No paid tier for additional browser features
  • Waterfox — where it wins

    • Advanced tracking protection with Standard, Strict, and Custom modes
    • Open source with built-in ad and tracker blocking
    • Syncs bookmarks, passwords, history, tabs, and preferences

    Where it doesn't

    • No premium tier or payment options are offered
    • Synchronization depends on a Mozilla account and Mozilla Sync
    • No AI features are included

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update