[villedespommes]

The app looks pretty cool! Congratulations, OP!!

If you don't need a web UI, I'd strongly recommend rclone (https://rclone.org/) that can layer e2e encryption over many and I mean MANY cloud storage providers!

It runs on Linux, Windows, MacOS and Android.

Finally, it has some nifty features as "union" which combines multiple backends into a single directory view.