NeutronDrive

Browse and transfer Proton Drive files with a native Qt interface and the
bundled SDK-based NeutronDrive event bridge. This is beta community software, not affiliated with, endorsed by, or
officially supported by Proton AG.

Source code and documentation: https://github.com/SigmaCodez/NeutronDrive

Download native Linux packages (including DEB and RPM): https://github.com/SigmaCodez/NeutronDrive/releases/latest

For online-only placeholders and file-manager integration, use the native DEB or RPM edition.

On-demand FUSE mounts require the native DEB/RPM installation; strict Snap
confinement does not support this application's unprivileged FUSE helper.
Browsing, transfers and background folder synchronization work inside Snap.

A Proton account, browser and desktop Secret Service are required. Before
sign-in, connect the keyring interface. Safe folder synchronization also needs
read-only mount information to reject FUSE and nested mounts:
sudo snap connect neutrondrive:password-manager-service
sudo snap connect neutrondrive:mount-observe