You are probably better off asking on the piracy community.

OnlyOffice is not the unmaintained OpenOffice.

The old Instagram before they added the video stuff. Pretty much a 1:1 clone of that I was told (I was never on Instagram so 🤷).

These are probably just rubber nubs where you could install wifi antennas. You would still need to buy the antennas and a pcie m2 wifi addon card.

You are very optimistic about the user retention 😅

It does via the Nextcloud apps. I also use KaraDAV and am quite happy with it.

If you don’t like the somewhat barebones web-ui you can use Filestash instead, the docu explains how to set it up with webdav only and pass through the credentials directly (a bit convoluted at first, but once done it works great).

https://github.com/Stirling-Tools/Stirling-PDF

Happens to be more useful than I originally thought.