I am really happy about this announcement from #Mozilla: a free, completely local, #translation engine. Also you can run the training pipeline yourself. And, it can translate your input in forms to the language of the site. https://blog.mozilla.org/en/mozilla/local-translation-add-on-project-bergamot/
Mozilla releases local machine translation tools as part of Project Bergamot
The translations add-on is now available in the Firefox Add-On store for installation on Firefox Nightly, Beta and in General Release.Rebecca Smith (The Mozilla Blog)