[someone4958923]

We use Bookstack[0] for this and I can recommend it. Free and open source.

- PDF Export - Oauth2 - Revisions - History - Permissions - WYSIWYG/Markdown/Diagrams etc.

[0] https://www.bookstackapp.com/

[lf-non]

Bookstack is quite nice but last I saw it doesn't support multi user collaboration which this tool seems to include as a core feature. That can be a big differentiator for a lot of people.