OP here: I started this project as I needed to manage and edit files regardless of their location. It's under AGPL, and you can self host it on your own server

OP here: I started this project as I needed to manage and edit files regardless of their location. It's under AGPL, and you can self host it on your own server but a demo is available on my own server: https://nuage.kerjean.me https://nuage.kerjean.me