This looks cool: Mozilla has released a translation tool as an add-on for Firefox that can do web page translation locally instead of sending data to the cloud! It’s based on Project Bergamot and implemented in WebAssembly.
IMO translation is one of those things like speech recognition that ideally should have always have been local (for obvious privacy reasons), but the processing and data just wasn’t there yet when Google Translate and similar services launched.
I installed it, but found what I really need isn’t to translate a page but an individual article or comment in my social stream. So I’m still looking.