ashishdevasia/ha-proton-drive-backup

This is a Home Assistant add-on that automatically backs up your Home Assistant instance to Proton Drive. Proton Drive is an end-to-end encrypted cloud storage service from Proton, the company behind ProtonMail. If you already use Home Assistant to manage smart home devices and want your backups stored in a privacy-focused cloud rather than Google Drive, this add-on handles that. The add-on is a port of the well-known Home Assistant Google Drive Backup add-on. The scheduling, retention, and generational backup logic is carried over unchanged. Generational backup means you keep more recent backups and fewer older ones automatically, so you do not have to manage retention by hand. Only the storage destination has been changed from Google Drive to Proton Drive. Because Proton Drive has no public API, the add-on uses Proton's official command-line tool, which it bundles inside. Authentication is done through an interactive browser login rather than an automated flow. Each backup also saves a small metadata file alongside the backup archive in Proton Drive, since there is no API for storing file properties directly. Installation takes about four steps: add the repository URL to your Home Assistant add-on store, install the add-on, start it, and sign in to your Proton account through the web interface the add-on provides. It supports aarch64 and amd64 hardware, which covers most Home Assistant setups including standard Raspberry Pi devices and x86 machines. The project is unofficial and not affiliated with Proton AG. It is licensed under MIT.