🌐 Web browsers Open source Privacy ★★★★★

Mozilla Firefox

The privacy-first browser with an independent engine

Overview

Mozilla Firefox has used an independent web engine (Gecko) since 2004, fully separate from the Google Chrome/Chromium ecosystem. The Mozilla Foundation, a nonprofit, runs it with a design philosophy that puts user interests first.

Enhanced Tracking Protection (ETP) blocks known trackers and third-party cookies out of the box. Total Cookie Protection (TCP) isolates cookies per site to reduce cross-site tracking. Container tabs let you separate Facebook, Google, work, and personal accounts in one browser.

Firefox Sync, a rich extension ecosystem (uBlock Origin, etc.), and strong developer tools cover everyday needs. It is one of the most recommended first browsers for de-Googling.

Scores

Privacy 5/5
Ease of use 5/5
Features 5/5
Value 5/5

Google Chrome — comparison

Unlike Chrome, there is no Google account integration and tracking protection is on by default. The non-Chromium engine reduces exposure to Google-led web standards. Trade-off: no direct Chrome Web Store access (some extensions still work).

Pros

  • Independent Gecko engine—not Chromium-dependent
  • Enhanced Tracking Protection enabled by default
  • Container tabs for account separation
  • Available on all major platforms
  • Large extension ecosystem

Cons & caveats

  • Some web apps have weaker compatibility than Chromium browsers
  • Telemetry is on by default (can be disabled in settings)
  • Google Search is the default engine (changeable)

Best for

  • People leaving Google/Chromium dependency
  • Users who want privacy without sacrificing daily usability
  • Anyone who wants container tabs for account separation

Not ideal for

  • Users who need 100% Chrome extension compatibility
  • People who require zero telemetry from day one
  • Developers who depend on Chromium-only web features

Specs

Pricing
Free — Completely free. Add-ons like Mozilla VPN and Firefox Relay exist, but the browser itself has no subscription.
Difficulty
Easy
Data location
Firefox Sync uses Mozilla (US) servers when enabled. ETP/TCP run on-device. Telemetry can be opted out.
Platforms
Windows · macOS · Linux · Android · iOS
Highlights
Mozilla財団(非営利)が運営Total Cookie Protection標準コンテナタブでアカウント分離GeckoエンジンでChromium非依存

Migration from Google Chrome

  1. 1 Install Firefox and export Chrome bookmarks as HTML, then import
  2. 2 Export Chrome passwords as CSV and move them via Bitwarden or similar
  3. 3 Change the default search engine to DuckDuckGo or Brave Search
  4. 4 Use Firefox for a week daily, then uninstall Chrome if everything works

Setup steps

  1. 1 Install from https://www.mozilla.org/firefox/
  2. 2 Settings → Privacy & Security → Strict mode and confirm TCP is enabled
  3. 3 Settings → Search → set default search engine to DuckDuckGo or similar
  4. 4 Install uBlock Origin and configure Firefox Account Sync

Related on Amazon

Books and devices that may help your migration. Verify specs and price before buying.

  • Books

    Permanent Record — Edward Snowden

    Essential reading on surveillance and personal privacy—the “why” behind de-Googling.

    View on Amazon ↗