I used to work in the field of machine translation and would like to know more about how they are doing this translation. 10 years ago, we saw the explosion of statistical and training based translations. However, these are better suited for the cloud, so does anyone know where I can find info on how Firefox does their translations?
Firefox translations are local and open source.
https://searchfox.org/mozilla-central/source/toolkit/components/translations may be a good place to start to learn. https://firefox-source-docs.mozilla.org/toolkit/components/translations/index.html may also be helpful.