Celeste is a GUI file synchronization client that can connect to virtually any cloud provider.
- Backed by rclone, giving you a reliable and battle-tested way to sync your files anywhere
- Written with GTK4 and Libadwaita, giving Celeste a native look and feel on your desktop
- Written in Rust, making Celeste blazingly fast to use
As someone who clicked the link, I can confirm it says it supports Proton Drive.
I too clicked the link. It was more of a rhetorical question.