Independent open source browser from Mozilla with tracking protection
Firefox is an open source web browser developed by Mozilla and one of the few major browsers not based on Chromium, running on its own Gecko engine instead. It blocks many trackers by default with Enhanced Tracking Protection, supports extensions on desktop and Android, and syncs bookmarks, passwords and tabs through a Mozilla account. Recent versions add vertical tabs and tab groups.
- features
- 5
- alternatives
- 11
- platforms
- 5
- Updated
- Oct 12, 2026
Features
Our take
Pros
- Independent Gecko engine, an alternative to Chromium browsers
- Enhanced Tracking Protection blocks many trackers by default
- Extensions supported on desktop and Android
Cons
- Some sites tested mainly in Chrome may misbehave
- No extensions on iPhone, where it runs on WebKit
Editorial assessment by the Alternatives.tools team, based on what the product is known for. Not a user review.
Best Firefox alternatives
See all 11 alternatives
LibreWolfFreeOpen sourcePrivacy-hardened Firefox fork with uBlock Origin included
Zen BrowserFreeOpen sourceFirefox-based browser with vertical tabs, workspaces and split view
44.9Kstars
BraveFreeOpen sourcePrivacy-focused Chromium browser that blocks ads and trackers by default
4.8(662.7K) · App Store
Google ChromeFreeGoogle's web browser, with sync across devices and Gemini built in
4.7(3.9M) · App Store
VivaldiFreeCustomizable browser with built-in mail, calendar and feed reader
4.7(4.4K) · App Store
SafariFreeApple's browser for Mac, iPhone and iPad, focused on privacy and efficiency
4.4(180.6K) · App Store
User reviews
No reviews yet. Be the first to share your experience with Firefox.