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Ok, but why? What’s wrong with Firefox and how do the forks address those points?
I posted the list of alternatives simply because OP asked for forks.
Me posting this list shouldn’t be an implication that I believe Firefox to be bad. I’m offering alternatives as the OP requests.
Every one of the links I shared have detailed information about how their product mutates the original Firefox or Chromium browser. Do you really need me to copy-paste that information into a comment?