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I want to translate a long text and I am looking for a software that shows the text and the translation I write at the same time, in two windows and with possibly a synchronization. Does it exist? Otherwise, what are the existing softwares and what do they do ?
PS: I want to translate a 250 page book... I am not looking for a software that does the translation, but for an nice interface where I can do the translation.
If you are asking about professional translation tools (rather than machine transation sites), there is a useful survey that includes some for Mac at
http://en.wikipedia.org/wiki/Computer-assisted_translation
Also can ask on the list devoted to Mac pro translators
https://groups.yahoo.com/neo/groups/MacLingua/info
(Relying on machine translation inevitably involves substantial risks of potentially embarassing errors, I recommend that the results should always be edited by a pro or native speaker)
I've used http://www.acetools.net/ and it works pretty good. It has pretty basic text editing. Also Microsoft Word can translate up to 400 words at a time via its reference tools.
Try Overspot - https://www.redactry.com/overspot Really good translation app for macOS.
I find that Google Translate, free online at https://translate.google.com/ is the best I have used.
