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Firefox is now the last major browser that still supports uBlock Origin
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this post was submitted on 15 Aug 2026
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Mozilla fundamentally can't block ublock because Firefox is FOSS. All the other mainstream browsers are proprietary. Firefox is licensed under MPL.
Some extensions get removed from the Firefox extension site, such as addons that promote copyright infringement, because Mozilla can't legally promote that stuff. You can however still install extensions from files.
Even if the main Firefox browser executable from Mozilla were to block ublock extension, then people could legally fork the Firefox code to make their own browser.
Isn’t chromium also (supposed to be) FOSS? Or am I misremembering
FOSS ceases to be democratic when a company like Google funds its development. I don't know of a fork of Chromium that declined to move to manifest 3, but there probably is one.
Yeah hence “supposed to be”
I’m only semi-tech-literate, what is this manifest 3 thing and why does it kill Ublock? And if chromium is open, shouldn’t forks be able to modify whatever manifest 3 is to restore the abilities Ublock needs?