Side by side

Mozilla Firefox vs Tor Browser

Both stand on web browsers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Mozilla Firefox

Free plan Open source AndroidExtensioniPhone+4

Firefox combines cross-device browser features, extensions, and privacy controls without a listed price. Review its privacy notice and settings for details relevant to your preferences.

Visit Mozilla Firefox

Tor Browser combines Tor routing with browser privacy and security controls, while its security settings can affect page behavior. Remember that its protection applies to the browser's traffic, not other applications automatically.

Visit Tor Browser

The facts

	Mozilla Firefox	Tor Browser
Free plan	Yes	Yes
Open source	Yes	Yes
Runs on	Android, Extension, iPhone, Linux, Mac, Web, Windows	Android, API, Linux, Mac, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	1
Maker	Mozilla Firefox	Tor Browser
Website	firefox.com	torproject.org
On web browsers	#1 of 154	#3 of 154

Mozilla Firefox: what it does well

Free and open source.
Available across desktop, mobile, and extension platforms.
Syncs bookmarks, passwords, and open tabs.
Total Cookie Protection isolates cookies between websites.
Thousands of free extensions are available.

What to know first

Uses standard tracking protection, not another listed level.
Some users’ DNS requests go through a resolver service.

Tor Browser: what it does well

Free and open-source software.
Available for Android, Linux, macOS, and Windows.
Can access onion services.
Three security levels offer different feature restrictions.

What to know first

Other applications are not automatically routed through Tor.
Security settings may cause some pages to work improperly.
Extra browser add-ons are discouraged.

Alternatives to Mozilla Firefox Alternatives to Tor Browser The whole list