Privacy Browsers

Waterfox

Waterfox is a privacy-oriented, open-source web browser based on Firefox technology, offering disabled telemetry, built-in content blocking, anonymized DNS, private tabs, extensive customization, and broad extension compatibility.

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✓ Software download·Open Source·Updated September 19, 2026
DeveloperAlex Kontos, Adam Wood
LicenseOpen Source
File size66.5 MB
Languageen-US
Downloads10

Private Browsing with Flexible Interface Controls

Waterfox is a Firefox-based web browser that removes browser telemetry while adding privacy and interface features for everyday browsing. Its main workflow remains familiar: open websites in tabs, organize bookmarks, install compatible extensions, and adjust security or appearance through detailed settings. A built-in blocker stops many ads, trackers, pop-ups, and overlays without requiring a separate extension. Users can choose horizontal, vertical, or tree-based tab organization and select among multiple browser interface styles and color palettes. Because the browser uses the Gecko engine and supports Firefox WebExtensions, it preserves broad website and add-on compatibility while offering an independently maintained alternative with greater emphasis on customization and reduced data collection.

Waterfox separates private browsing from the usual all-or-nothing private window model. Private tabs can sit beside regular tabs while using an isolated private container, and their site data is removed after the final private tab closes. DNS over Oblivious HTTP sends encrypted lookups through a relay so the resolver receives the query without directly receiving the requester’s identity. This protects DNS privacy but does not conceal the public IP address from websites; users seeking network-level IP masking may consider CyberGhost or another VPN service. The browser can import common browsing data and synchronize supported information through a Firefox account, while independent maintenance and public source code give users additional visibility into its development.

Benefits of Using Waterfox

The main benefit of Waterfox is a practical balance between mainstream web compatibility, privacy, and visible customization. Disabling telemetry reduces background collection by the browser, while the built-in content blocker prevents many ads and tracking requests from loading. Oblivious DNS separates the requester’s identity from the domain query, adding privacy to name resolution without requiring manual resolver configuration. Private tabs let users isolate temporary sessions without moving their entire workflow into another window. Horizontal, vertical, and tree-style tab layouts support different browsing habits, and selectable interface designs help users create a familiar workspace. The status bar exposes full link destinations and page-loading information, while Firefox WebExtension support provides access to a broad add-on ecosystem. These features do not make browsing anonymous: websites, accounts, search providers, extensions, and network services can still collect information. Users should review permissions, keep the browser updated, and use separate network privacy tools when IP masking is required.

Waterfox features

Key capabilities and highlights.

Feature 1

Built-In Content Blocking

The integrated blocker prevents many advertisements, trackers, pop-ups, and page overlays from loading. Users can manage filtering lists, create site exceptions, and control partner search advertisements, reducing distractions and unwanted requests without installing a separate blocking extension.

Feature 2

Oblivious DNS

DNS over Oblivious HTTP encrypts domain lookups and passes them through a relay before they reach the resolver. The relay can identify the connection but not the query, while the resolver receives the query without directly identifying its sender.

Feature 3

Private Tabs

Private tabs can remain in the same window as ordinary tabs while operating inside a separate private container. When the last private tab closes, the browser clears its associated site data without interrupting the user’s regular browsing session.

Feature 4

Tree-Style Tabs

Tree tabs organize newly opened pages beneath the tab that created them, producing visible branches for related research or tasks. Users can collapse completed branches, move entire subtrees, and reorganize complex browsing sessions with fewer individual actions.

Feature 5

Flexible Tab Layouts

The browser supports horizontal and vertical tab arrangements in addition to hierarchical tree organization. These options let users match the interface to screen space, browsing volume, and personal workflow instead of relying on one fixed tab presentation.

Feature 6

Custom Interface Styles

Waterfox provides multiple browser interface designs, light and dark appearances, and selectable color palettes. These controls allow substantial visual personalization through visible settings, making it easier to recreate a familiar layout or distinguish separate browsing environments.

Feature 7

Status Bar

The optional status bar displays complete link destinations when the pointer hovers over them, along with loading progress and relevant shortcuts. This persistent presentation helps users inspect where links lead without relying on temporary overlays.

Feature 8

Firefox Extension Support

Support for Firefox WebExtensions provides access to a broad range of add-ons for content filtering, password management, accessibility, productivity, and other tasks. Users should still examine requested permissions because extensions can access sensitive browser data.

Old versions

Browse historical releases and previous builds.

G6.0.19September 5, 2024
G6.0.18August 6, 2024
G6.0.17July 4, 2024
G6.0.16June 12, 2024
G6.0.15May 29, 2024

Frequently asked questions

Common questions about Waterfox.

What is Waterfox?

It is an independently maintained, open-source browser based on Firefox technology. It disables browser telemetry and adds built-in content blocking, anonymized DNS, private tabs, additional interface choices, and support for compatible Firefox extensions.

How is it different from Firefox?

It uses the same Gecko engine, so most websites and compatible extensions behave similarly. The primary differences include stripped browser telemetry, integrated ad and tracker blocking, Oblivious DNS, private tabs, and additional interface customization.

Do private tabs make browsing anonymous?

No. Private tabs isolate and clear local site data, but websites can still see the public IP address and observe activity within the session. Signed-in accounts, extensions, network operators, and other services may also identify the user.

What does Oblivious DNS protect?

Oblivious DNS separates the source of a lookup from the requested domain by using an encrypted relay. It improves DNS privacy, but it does not hide browsing activity from destination websites or replace the IP masking provided by a VPN.

Can it use Firefox extensions?

Yes. Compatible Firefox WebExtensions are supported, providing access to many common add-ons. Extensions made only for Chromium browsers do not transfer automatically, and some Firefox add-ons may still require testing for complete compatibility.

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Software download

Download Waterfox

Waterfox is a privacy-oriented, open-source web browser based on Firefox technology, offering disabled telemetry, built-in content blocking, anonymized DNS, private tabs, extensive customization, and broad extension compatibility.