Some translation Add-ons for Windows/Firefox-- https://addons.mozilla.org/en-US/firefox/search/?q=translate&appver=18.0&platform=windows Change options in left margin of that page for other OSes and/or a specific Firefox version. I use '''''Quick Translator''''' add-on to highlight part of a page to translate -- https://addons.mozilla.org/en-US/firefox/addon/quick-translator/?src=search *highlight part to translate *click small symbol that appears at end of highlighted area (see image) *translation appears in box overlay (see image)

I added a Google Translate search engine to Firefox's Search Bar. http://mycroft.mozdev.org/search-engines.html?name=Translate+Google Google Translate [Detect]->en (English GUI) is the one I use.