SDk for Document Services APIs ? Local Server working?

I have mailed to commercial Adobe, but no reply in more than a week. So I'm trying to ask here.

I have used the PDF Service API to generate PDF from DOC, but I wonder if there is (as a payment SDK or so) a package that I can install on local server, without external connection, to generate PDF in the same way?

I need to setup a project for a Government organization, and I must avoid any external connection, API, or microservice.