It doesn’t seem to exist. I’d like a solution to upload and sync my photos and my KeePass database, but I’m really hesitant to upload personal photos unencrypted to services exposed to the internet. Unfortunately self-hosting a Nextcloud instance on my LAN isn’t possible at this moment, but maybe a VPS with a strict firewall and a mesh VPN like Tailscale or Netbird? But honestly I’d rather just pay someone for the trouble.
What do you suggest? Clients need to be FOSS and available on Linux and Android, and on Android they need to be available on F-Droid (thus no proprietary blobs or libraries from Google).
How about Filen? They are a zero knowledge E2EE service. I use them personally. They have a pay once option as well. Their clients are open source. Source available in GitHub.
Their Android client isn’t on F-Droid and their repository for the Android client is super weird: https://github.com/FilenCloudDienste/filen-ts
There’s not even a file declaring the license, nor any APK releases to download so it seems like you can’t get it outside of the Google Play store.
I just remembered that I used to download the app with Obtainium from this repository. They have archived this repo four days and I don’t yet know what’s going on. The license in the aforementioned repo is GPL v3.
Should have checked all the repos beforehand 🤦♂️. I use Aurora Store when Play Store is the only option (available in F-Droid). With the anonymous option of course.