Firefox Translations: Translate websites in your browser without using the cloud
I've just installed it, and I'm impressed so far. I've only run it against some sample German Wikipedia articles (https://de.wikipedia.org/wiki/Clan_of_Xymox), but it produces surprisingly readable text. I also particularly like the "highlight potential errors" option to flag stuff that even the translation service thinks might be a bit off.It's not nearly as speedy as Google Translate, but I'll take that happily if it means keeping it local.