I seem to recall that Nextcloud actually supported this, but I can't find it right now. In any case, I know that there are people who are at least somewhat involved with both projects.

Yeah, that would be me. :) At some point we supported it, but it turned out that for security reasons you would have to have a separate domain for your remoteStorage than your Nextcloud – which kind of defeats the purpose of easy integration.

At leas that is what I recall. Still think it would be great to integrate remoteStorage properly with Nextcloud! :)

Hmm, maybe you could use Content-Security-Policy to force the files to be treated by the browser as if they came from a different origin?

I think so, too. Let's make it happen! :)