Browser Selection — MS Windows and Linux

https://addons.mozilla.org/en-US/firefox/language-tools

* Unless a sync passphrase is enabled, in which case Chrome also uses E2E encryption.

Browser Sync Comparison

Feature	Chromium	Chrome	Firefox	Brave	Vivaldi
Sync available	✗	✓	✓	✓	✓
Authentication	—	Google account	Mozilla account	Sync chain code	Vivaldi account
E2E encryption	—	Optional (passphrase)	✓ Default	✓ Default	✓ Default
Bookmarks	—	✓	✓	✓	✓
History	—	✓	✓	✓	✓
Passwords	—	✓	✓	✓	✓
Open tabs	—	✓	✓	✓	✓
Extensions	—	✓	✓	✓	✓
Settings	—	Broad	Some preferences	Category-level	Some + UI
Notes	—	✗	✗	✗	✓
Deep config flags	—	✗	✗	✗	✗
Privacy model	—	Google holds keys*	E2E, Mozilla servers	E2E, no account needed	E2E, Iceland servers

* Unless a sync passphrase is enabled, in which case Chrome also uses E2E encryption.

Pre-Hardened Browser Forks — Firefox / Gecko

Firefox / Gecko

Browser	Platform	What it does	Best for
LibreWolf	Desktop Win / Mac / Linux	Strips all Mozilla telemetry, crash reporting, studies, Pocket. Ships with uBlock Origin and hardened defaults.	Daily driver — easy, fast, secure. Best Firefox fork for everyday use.
Mullvad Browser	Desktop Win / Mac / Linux	Co-developed with the Tor Project. Tor-grade anti-fingerprinting on the clearnet. Includes uBlock + NoScript.	Compartmentalized anonymity sessions. Pair with Mullvad VPN for IP privacy.
IronFox	Android only	Fork of Mull Browser (discontinued). Ships with uBlock by default, telemetry removed, Phoenix hardened prefs.	Privacy-hardened Firefox for Android. The mobile equivalent of LibreWolf.
Tor Browser	Desktop + Android	Routes traffic through multiple relays for true anonymity. All users look identical to websites.	Journalism, whistleblowing, censorship evasion. Maximum anonymity.

Pre-Hardened Browser Forks — Chromium

Browser	Platform	What it does	Best for
Brave	All platforms	Built-in Shields (ad/tracker blocking), fingerprint protection, optional Tor mode. Highest PCMag privacy score (143).	Chrome switchers who want privacy with minimal friction. Best balanced option.
Ungoogled Chromium	Desktop Win / Mac / Linux / BSD	Removes all Google-specific web services, binary blobs, Safe Browsing, sync, and domain tracking. Drop-in Chromium replacement.	Purists who want Chromium performance with zero Google integration. Manual setup required.

Firefox Hardening Frameworks (user.js)

All frameworks work by placing a user.js file in your Firefox profile directory. They override about:config settings on every browser launch.

Browsers with Built-in VPN

Browser	VPN type	Cost	Scope	Key detail
Firefox	True VPN (proxy network)	Free 50 GB/month	Browser only	Brand new — rolling out in beta since March 24, 2026. Available in US, UK, DE, FR. Does not sell data or inject ads.
Opera	Secure proxy (VPN-like)	Free Unlimited	Browser only	AES-256 encryption, no-logs policy audited by Deloitte. Only 3 region choices (Americas, Europe, Asia). No specific country selection.
Brave	Full VPN (Guardian)	Paid ~$9.99/mo	Device-wide	Only browser VPN with independent third-party audit. Covers all apps, not just browser. Powered by Guardian/Mullvad infrastructure.
Epic Privacy Browser	Built-in proxy	Free	Browser only	Chromium-based, open-source, no-logs. Blocks WebRTC leaks. Anti-tracking focus.
Aloha Browser	Built-in VPN	Freemium	Browser only	Free tier disconnects VPN after 60s if you switch apps. Premium adds more servers. TrafficMask feature hides VPN usage.
Microsoft Edge	Secure Network (Cloudflare)	Free Limited data	Browser only	Powered by Cloudflare. Requires Microsoft account. Limited monthly data allowance.

⚠ Most “built-in VPNs” are proxy-based, not true VPNs — they mask your IP but don’t provide full device-wide encryption. Only Brave’s offering works at the system level. Free browser VPNs may be susceptible to WebRTC and DNS leaks.

Quick Decision Matrix