Choice of means of publication of instructions?

Question

Web development

Lord, I need your help. Perhaps someone has already encountered the problem of choice.
Choose a tool for compiling and publishing instructions
1. Web solution
2. Editing text in wiki markup or similar
3. Versioning, the ability to save drafts
4. It is desirable to have an approval mechanism
5. Regulated access by user groups
6. A mechanism for confirming acquaintance is desirable
7. It is desirable to have a mechanism for notifying certain groups of users by mail when changes are published
8. Preview office (and other) file formats directly in the browser without the need to download
9. Integration with AD
10. Integration with JIRA (links to tasks, lists of tasks, the ability to start a task from the page)
11. Organization of knowledge base
12. Organization of discussions (it is possible to use a separate tool for this)
Be sure to selfhosted. It is possible to finish some requirements on your own, the main thing is that there is an open source code.
I am also considering a purchase, but the main thing is the price tag is not exorbitant.
Atlassian Confluence - because everything is clear, but expensive. Or who will tell you the possibilities of an infinite probe? (:
PS HZ what tags to stick to this question.

Answer 1

Perhaps xwiki.org
will do. I'm not sure about the presence of items 4, 6, 8 (there is definitely a plugin for PDF), 10.
Other possibilities, it seems, are there.