10GB Free Zero Knowledge Cloud Storage – Filen.io
filen.ioIf it works, a lot of people will be asking themselves - "why didn't i think of building the same thing"? Because the market need is obvious.
Seems to have been working for 4+ years now.
Their free tier looks extremely generous to me, and in this case I like the fact that it's from and entirely hosted in Germany.
Another option in this space is Icedrive, as long as you avoid use of the WebDAV service. https://icedrive.net/encrypted-cloud-storage