What engine should be used to maintain program documentation?

Question

CMS

It is necessary to publish documentation on working with the program online. At the same time, there are several different versions of the program, and the documentation for them differs, as well as within the same version, some functions work differently from release to release.
Those. there should be a description filtering function, depending on the version and release, or the possibility of separate publication.
The library is very similar in functionality https://technet.microsoft.com/ru-ru/library/aa9915...
Are there any opensource analogues. Wiki engines are not quite sharpened for this, but if there are examples of implementation, I would be grateful.

Answer 1

First decide what format you need. This can be done by _full_ documentation requirements and by comparing "requirements <> format capabilities".
In general , according to your requirements:
any src-based format (whether plain text or xml-based) that can be stored in branches in the SCM tree falls under.

Answer 2

daux.io
It?

Answer 3

https://sphinx-ru.readthedocs.io/ru/latest/

Answer 4

- asciidoc + Docbook
- DITA + OT or Ant , Serna or Oxygen editors