Mozilla Firefox vs Tor Browser

Mozilla Firefox: what it's good at

Firefox is the last major browser not built on Google's Chromium engine, developed by the non-profit Mozilla Foundation. It offers strong tracking protection on by default, deep customisation, and genuinely excellent built-in developer tools.

• Independent Gecko rendering engine
• Enhanced tracking protection by default
• Extensive extension ecosystem
• First-class developer tools

Tor Browser: what it's good at

Tor Browser routes your traffic through multiple volunteer-operated relays so no single point can link your identity to what you browse. It is the standard tool for journalists, researchers and anyone who needs to circumvent censorship or surveillance.

• Multi-hop traffic anonymisation
• Circumvents network censorship
• Blocks browser fingerprinting
• Maintained by a non-profit

Which should you choose?

Both are free, so the honest answer is that you can install either and decide for yourself — that is the advantage of free software over a paid trial.

Both run on Windows, macOS, Linux, Android. Only Mozilla Firefox supports iOS. Both are open source, so neither locks you in.

We deliberately do not publish a star rating for either. We have no way to verify a rating that would be honest at scale, and an invented one would be worse than none — so we give you the facts and let you decide.

Frequently asked questions

Is Mozilla Firefox better than Tor Browser?

Neither is universally better. Mozilla Firefox the major independent browser, built by a non-profit, while Tor Browser anonymous browsing through the Tor network. The right pick depends on your platform and workflow.

Are both really free?

Mozilla Firefox is open source and Tor Browser is open source. Both can be downloaded without paying.

Can I install both?

Yes. Since neither costs anything, installing both and comparing them on your own files is usually the fastest way to decide.