There is "Otter Browser"[1] that is FOSS. It aims to be an Opera 12 clone (it doesn't use presto of course). I don't use it but it seems to have active developm

There is "Otter Browser"[1] that is FOSS. It aims to be an Opera 12 clone (it doesn't use presto of course). I don't use it but it seems to have active development. [1] https://otter-browser.org/ https://otter-browser.org/