Comparison
Firefox vs Brave
Firefox and Brave are the two most credible free, open-source alternatives to Chrome — one built on Mozilla's independent Gecko engine, the other on Chromium with aggressive blocking enabled by default. Both earned 8/9 on our trust checks; the real decision comes down to engine independence versus out-of-the-box compatibility.
| Pricing & openness | ||
| Price | Free No paid tiers or upsells inside the browser. | Free Optional firewall/VPN subscription at $9.99/mo; strictly opt-in. |
| License & source code | Open source (MPL-2.0) Full source public at mozilla/gecko-dev on GitHub. | Open source (MPL-2.0) Full source public at brave/brave-core on GitHub. |
| Signed releases | Yes GPG-signed SHA256/SHA512 checksums for every release; Authenticode-signed Windows installers, notarized macOS builds. | Yes PGP-signed SHA-256 checksums on GitHub releases; Authenticode-signed Windows installers, notarized macOS builds. |
| Privacy & security | ||
| Tracker blocking by default | Enhanced Tracking Protection Blocks third-party trackers, cryptominers, and fingerprinters with no configuration. | Shields Blocks ads, cross-site trackers, and fingerprinting built in — no extensions needed. |
| Telemetry & app trackers | 3 tracker signatures (Android) εxodus flags install analytics and Glean telemetry; enabled by default but fully disableable in Settings. | 0 tracker signatures (Android) Exodus static analysis found no ad or analytics trackers; anonymized P3A analytics can be fully disabled. |
| Patching & disclosure | 4-week release cycle CVEs disclosed via Mozilla Security Advisories; rapid point releases (152.0.5 and 152.0.6 shipped a week apart in July 2026). | Tracks upstream Chromium Inherits Chromium CVEs but ships engine upgrades quickly (currently Chromium 150); public HackerOne bug bounty. |
| Experience | ||
| Engine & compatibility | Gecko (independent) The only major browser outside the Chromium monoculture; rare sites may behave differently. | Chromium Shares Chrome's engine, so virtually every website and Chrome extension works unchanged. |
| Install size | 84 MB Windows 10+, macOS 10.15+, Linux; also on Android and iOS. | 349 MB macOS 12+, Windows 10+, Linux, iOS 18+, Android. |
| User rating | 4.6 (5.7M ratings) Google Play; available in English plus 90 more languages. | 4.8 (627K ratings) App Store; available in English plus 37 more languages. |
The bottom line
Choose Firefox if
Choose Firefox if you want a browser fully independent of Google's Chromium engine, with decades of security discipline and the broadest language and extension ecosystem behind it. Its Gecko engine keeps genuine diversity alive on the web, and its telemetry — the one caveat — can be switched off entirely in Settings.
Choose Brave if
Choose Brave if you want Chrome-grade compatibility with aggressive ad and tracker blocking that works the moment you install it. Independent analysis found zero tracker signatures in its Android app, and everything commercial — Rewards, VPN, the Leo assistant — stays off unless you opt in.