Built-in ad blocker
Block ads natively, no extension required
A Rust-based blocking engine is built straight into the browser. Subscribe to the same filter lists you'd use with uBlock Origin - with scriptlets, custom styles, and full syntax support.
A privacy focused browser built for power users who value customization and control over their online experience
Why Waterfox
Waterfox pairs a privacy first foundation with the kind of deep customization normally reserved for extensions and hidden flags. These are the highlights our community cares about most.
Feature overview
Every block below pulls straight from the browser - no extensions or hidden flags required.
A Rust-based blocking engine is built straight into the browser. Subscribe to the same filter lists you'd use with uBlock Origin - with scriptlets, custom styles, and full syntax support.
No LLM sidebars, summarizers, or assistants - and nothing sending your pages to a model. The only machine learning in Waterfox is translation that runs entirely on your device.
Traditional encrypted DNS hides what you're asking from intermediaries on the network, while Oblivious DNS hides who is asking from the resolver. Waterfox ships that combination by default, for free.
Learn how we run it withFastly.
There are no remote experiments, no "personalization" feeds, and no surprise pings - what runs on your machine is the code you installed.
Keep sensitive journeys isolated beside your regular browsing, then close the tab to wipe its local traces in one move.
Skip the fragile extension pile: Waterfox brings tab management, status bars, layout controls, and more straight into Settings.
Tree Vertical Tabs
Waterfox ships with an opinionated take on tree style tabs — no add-on required. Every new tab inherits context, branches stay tidy, and you control exactly where the tab bar lives.
Open links naturally and Waterfox builds the tree for you. Your browsing history stays readable and connected without manual tab wrangling.


When a session gets crowded, collapse what you are not using and keep only the active path expanded. You stay focused without losing structure.


Use Ctrl/Cmd plus arrow keys to reshape your tree quickly, then pair it with your preferred tab and session tooling for advanced workflows.


Tree tabs are built in, integrated, and ready to fit left/right sidebar workflows without extension drift or fragile custom setups.


Join millions who have chosen Waterfox for a faster, more private browsing experience without compromises.