Show HN: Proton Drive for Linux

A new FUSE‑based virtual filesystem lets Linux users mount their Proton Drive storage as a local directory, presenting the service’s metadata as folder listings while fetching file contents only when they are accessed. The implementation operates on demand, downloading data lazily to conserve bandwidth and disk space, and synchronises remote changes through Proton’s event feed, which updates directory listings and cached content. Write operations are temporarily stored in a local file and uploaded to Proton in full after a short timeout once the file is closed, offering a seamless read‑write experience comparable to other cloud services such as Google Drive, Dropbox, and OneDrive.

The mount’s design emphasizes efficiency and resilience: because files are not pre‑downloaded, users avoid unnecessary data transfer, and the system can handle remote modifications in real time via the event feed. Buffered writes ensure that edits are only transmitted after completion, reducing the risk of partial uploads. Communication between the filesystem daemon and any future graphical interface—or a system tray component—relies on a local Unix socket, with a fallback to a status file if the socket becomes unavailable, aiming to keep the service functional under varied conditions.

This tool is an early, unofficial project and carries no affiliation, endorsement, or support from Proton AG. The developer reports successful testing of common file operations—including reading, writing, creating, deleting, renaming, and moving—within a single Proton Drive share, though acknowledges that individual user configurations may differ and could affect performance. Future development may introduce a GUI, but for now the solution remains a command‑line utility that provides Linux users with direct, on‑demand access to Proton Drive while maintaining bandwidth efficiency and operational stability.

⚡ Effects Interpreter