What is the solution for hosting a translator on the Intranet (without an Internet connection)?

Question

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Please tell me what solutions exist for deploying a certain translator, server, website, engine, etc. on the Intranet (which does not have an Internet connection).
So that, for example, it was possible to insert a trite iframe translator on the site, or something like that, or just open the web face of the translator separately
, I looked at promt, they seem to need the Internet, and monthly payment, in general, a cloud solution, you need a standalone with a license purchase and that's it.