Waterfox to integrate Brave adblock engine, with search ads enabled by default
People > Companies ❤️ - programming.dev [Unofficial]
April 4, 2026
submitted by SnoringEarthworm to opensource
89 points | 41 comments
https://www.waterfox.com/blog/15-years-of-forking/
Title and image from alternativeto.net, to unbury the lede, but linked to the original post.
> This year will see Waterfox shipping a native content blocker built on Brave’s adblock library - and it’s worth explaining what that means and why.
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> The blocker runs in the main browser process rather than as a web extension, which means it isn’t subject to the limitations that extension based blockers like uBlock Origin face. It’s faster, more tightly integrated, and doesn’t depend on a separate extension process or require us to constantly pull in upstream updates. Brave’s adblock library is also mature - it has paid engineers working on it, a wide filterset, and crucially it’s licensed under MPL2, the same licence as Waterfox, which makes it a natural fit. uBlock Origin, as good as it is, carries a GPLv3 licence that would’ve created real compatibility headaches.
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> For how it works in practice: by default, text ads will remain visible on our default search partner’s page - currently Startpage. The idea is that this is what will keep the lights on. ~~This mirrors the approach Brave takes with their search partner.~~
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> Users who want to disable that entirely can do so with a single toggle in settings, and it has nothing to do with any of Brave’s crypto or rewards ecosystem - we’re just using the adblocking library. Everyone else gets a fast, native adblocker out of the box, no extension required.
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> If you already use an adblocker, don’t worry, you can carry on using it. This will be enabled for new users or users who aren’t already using an adblocker.
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> In the meanwhile, Waterfox’s membership of the Browser Choice Alliance alongside Google and Opera, is pushing for fair competition and actual user choice in the browser market.
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