Backblaze Personal Backup alternatives: 3 free & open-source picks
Compare recorded free and open-source options, their capabilities and operating requirements. Source dates are shown below; licenses, hosted limits and project activity can change.
Browser-driven encrypted backups to nearly any storage target, with more knobs than charm.
licenseMIT
runson your machine
installSigned Windows/macOS/Linux package or Docker container, then configure backups through its local web UI
dataEach backup target contains encrypted compressed `.dblock` data volumes, `.dindex` indexes, and one `.dlist` manifest per version; a local database accelerates catalog and restore operations.
the catch vs Backblaze Personal BackupIt can automate encrypted backups, but you must choose and pay for storage, protect credentials, monitor jobs, and test restores yourself instead of getting Backblaze's managed service.
setupThe first setup is not just an install: you must supply destination credentials, choose encryption and retention, preserve the passphrase, and understand how to rebuild from remote volumes if the local database is lost.
facts verified 2026-08-14
Encrypted snapshots to storage you choose; the cloud bill and restore drills are still yours.
licenseApache-2.0
runson your machine
installInstall KopiaUI or the CLI from native Windows/macOS/Linux packages, then create or connect to a repository
dataSnapshots live in an encrypted, deduplicated, content-addressed Kopia repository on local/NAS, SFTP, WebDAV, object storage, rclone, or supported cloud targets; small blocks are packed into opaque blobs.
the catch vs Backblaze Personal BackupIts snapshots are excellent, but the storage account, capacity, billing, scheduling, monitoring, and restore drills are all your responsibility rather than Backblaze's.
setupYou must provision and pay for the storage target, enter its credentials, and safeguard the repository password, Kopia cannot recover data if that password is lost.
facts verified 2026-08-14
Restic with buttons, schedules, checks, and enough guardrails to avoid living in a terminal.
licenseGPL-3.0
runsyour server
installStandalone installer or Homebrew on macOS/Linux, Windows installer, or Docker Compose; it downloads/manages restic on first run
dataBackups are encrypted, content-addressed restic repositories on the chosen local, SFTP, object-storage, or rclone target; Backrest keeps local JSON configuration, cache, and service data.
the catch vs Backblaze Personal BackupIt adds a friendly scheduler, but unlike Backblaze it includes no unlimited off-site storage, automatic destination, managed retention, or shipped physical restore.
setupYou still have to choose and provision storage, protect the repository password, grant filesystem access, and test restores; macOS may require Full Disk Access.
facts verified 2026-08-14
latest recorded source check 2026-08-14 · check current terms at the source
Nextcloud FilesFile sync is not a tested backup system; deletions and bad changes can follow you.
resticExcellent backup engine; still a terminal, scheduler, and retention policy you must assemble yourself.
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Duplicati | MIT | one-click install | web, macos, windows, linux | 14,900 | 2026-07 |
| Kopia | Apache-2.0 | one-click install | macos, windows, linux, cli | 13,800 | 2026-08 |
| Backrest | GPL-3.0 | one-click install | web, macos, windows, linux | 7,100 | 2026-08 |
People still pay for Backblaze Personal Backup because storage subscriptions sell confidence that files will still exist after a lost device, bad sync, or provider incident. The recurring cost buys chunking, encryption, conflict detection, versions, garbage collection, bandwidth, restore drills, monitoring, billing, and disaster recovery, not just the visible interface. The recorded subscription totals $108 a year before any costs of an alternative.
Questions about these alternatives
Is there a free alternative to Backblaze Personal Backup?
Yes: Duplicati, Kopia, Backrest. These are recorded free or open-source options. Compare their feature limits, licenses, hosting costs and current availability before choosing.
Should I just build my own Backblaze Personal Backup?
Our verdict is NOT REALLY. A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Backblaze Personal Backup, continuously back up a selected computer to user-owned object storage and test restores. The hard boundary is unlimited backup economics, client reliability, restore logistics, support, and durable infrastructure, plus reliability, durability, and cross-device sync. Review the scope, implementation prompt and trade-offs in the Backblaze Personal Backup build guide.
