# Backblaze Personal Backup vs Duplicati (2026): Free Alternative to Backblaze Personal Backup

Canonical: https://caniforkit.com/vs/backblaze-personal-backup-vs-duplicati
Last updated: 2026-08-14

Compare Backblaze Personal Backup ($9/mo) vs Duplicati ($0/mo open source MIT alternative to Backblaze Personal Backup). Side-by-side breakdown of pricing, self-hosting setup, data storage, and practical trade-offs.

## Side-by-Side Comparison Matrix

| Feature / Metric | Backblaze Personal Backup | Duplicati |
| --- | --- | --- |
| Monthly Subscription | $9/mo | $0.00 / month |
| 1-Seat Annual Cost | $108/yr | $0.00 / year |
| 5-Person Team Annual Cost | $540/yr | $0.00 / year |
| 10-Person Team Annual Cost | $1,080/yr | $0.00 / year |
| License Model | Proprietary Commercial SaaS | MIT |
| Hosting / Runtime | Vendor Cloud | Local |
| Data Ownership | Stored on vendor servers | Each backup target contains encrypted compressed `.dblock` data volumes, `.dindex` indexes, and one `.dlist` manifest per version; a local database accelerates catalog and restore operations. |
| GitHub Stars | Closed Source | ★ 15k |
| Code Repository | None | https://github.com/duplicati/duplicati |
| The Catch / Trade-off | Recurring subscription cost | It 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. |

## About Duplicati
Browser-driven encrypted backups to nearly any storage target, with more knobs than charm.

- **Installation**: Signed Windows/macOS/Linux package or Docker container, then configure backups through its local web UI
- **Setup Notes**: The 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.
- **Data Storage**: Each backup target contains encrypted compressed `.dblock` data volumes, `.dindex` indexes, and one `.dlist` manifest per version; a local database accelerates catalog and restore operations.
- **Supported Platforms**: desktop, web, one-click install
- **The Catch vs Backblaze Personal Backup**: It 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.

## Cost Savings Breakdown
Switching from Backblaze Personal Backup to Duplicati eliminates ongoing per-seat subscriptions:
- **Solo / 1-seat**: Save **$108/year**
- **5-person team**: Save **$540/year**
- **10-person team**: Save **$1,080/year**

## Frequently Asked Questions

### Is Duplicati a good free alternative to Backblaze Personal Backup?
Yes. Duplicati is a verified open source (MIT) replacement for Backblaze Personal Backup. Browser-driven encrypted backups to nearly any storage target, with more knobs than charm.

### What is the catch when switching from Backblaze Personal Backup to Duplicati?
It 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.

## Related

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