Head-to-Head Comparison · Alternative to Backblaze Personal Backup · 💾 cloud storage
Backblaze Personal Backup vs Duplicati
Browser-driven encrypted backups to nearly any storage target, with more knobs than charm. Here is how Duplicati ($0/mo open source) stacks up against Backblaze Personal Backup ($9/mo) across cost, hosting, data privacy, and real-world trade-offs.
Backblaze Personal Backup vs Duplicati Specification Matrix
facts verified 2026-08-14
| Dimension | Backblaze Personal Backup (Paid) | Duplicati (Replacement) |
|---|---|---|
| Monthly Price | $9 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $108 / yr | $0 / yr (Save $108) |
| 1-Year Cost (5 seats) | $540 / yr | $0 / yr (Save $540) |
| 1-Year Cost (10 seats) | $1,080 / yr | $0 / yr (Save $1,080) |
| Source & License | Proprietary SaaS | open source MIT |
| Where It Runs | Vendor Cloud | Local (on your machine) |
| Platforms | Web / Cloud | desktopwebone-click install |
| GitHub Stars | — | ★ 15k (active jul 2026) |
Deep Dive: Switching from Backblaze Personal Backup to Duplicati
Trade-offs, installation & data architecture
What you trade away
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.
How to deploy Duplicati
Signed Windows/macOS/Linux package or Docker container, then configure backups through its local web UI
What it takes to run
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.
Where your data lives
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.
Why fork Duplicati instead of vibe-coding a Backblaze Personal Backup clone?
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.
Backblaze Personal Backup vs Duplicati FAQ
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.
How much do you save switching from Backblaze Personal Backup to Duplicati?+
Backblaze Personal Backup costs $9/mo ($108/yr) per seat, whereas Duplicati is $0/mo. Switching saves $108/yr for a solo user, $540/yr for a 5-person team, and $1,080/yr for a 10-person team.
How do I install or self-host Duplicati instead of Backblaze Personal Backup?+
Install: Signed Windows/macOS/Linux package or Docker container, then configure backups through its local web UI. Setup: 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.
