Duplicacy vs Duplicati
Editor take
Pick Duplicacy to back several computers up to one storage and dedupe across all of them. Pick Duplicati for an MIT-licensed server with a free web UI.
Pros and cons
Each app's own strengths and weaknesses, plus the specs where Duplicacy and Duplicati differ.
Duplicacy
Pros
- Lock-free concurrent backups
- Cross-computer deduplication
- Wide storage backend support
- Snapshot-style revisions
Cons
- Web UI needs paid licence
- Proprietary storage format
- CLI has no scheduler
Duplicati
Pros
- Encrypted, deduplicated archives
- Many storage backends
- Schedules and retention rules
- Restore single files or versions
- Multiple destinations per job
Cons
- Restore needs Duplicati
- No dedupe across machines
- Alerts need the paid Console
Duplicacy vs Duplicati: specs side by side
Every spec for both apps in one table. Values in bold are where one app has the edge, and amber ones are worth a second look before you install.
| Spec | ||
|---|---|---|
| Price | Free + Paid | Free + Paid |
| Licence | Custom | Advantage: MIT |
| Concurrent backups | Lock-free | – |
| Storage support | Local, SFTP, S3, B2, WebDAV | Local, SFTP, S3, B2, WebDAV |
| Notifications | Email, Webhooks | Email, Webhooks, Telegram |
| Deduplication | Global | Yes (per repository) |
| Install options | Docker + Linux · macOS · Windows | Docker + Linux · Windows · macOS |
| Clients | macOS · Windows · Linux | macOS · Windows · Linux |
| Web UI | Yes | Yes |
| Architecture | x86 + ARM | x86 + ARM |
| Containers | 1The app alone | 1The app alone |
| Database | none | SQLite |
| Runtime | Go | .NET |
Common questions
Are Duplicacy and Duplicati the same thing?
No. They are two separate backup tools with similar names.
Can Duplicacy restore Duplicati backups?
No. Duplicati writes backups in its own volume format, so restoring needs Duplicati. Duplicacy keeps its own storage format too, so neither tool can read the other's backups.
Is Duplicati free?
Yes. The server and its web UI are open source under the MIT licence. The optional hosted Duplicati Console has a free tier for two machines, and missed-backup alerts need a paid plan.
Is Duplicacy free?
The command-line version is free for personal use, and commercial use needs a licence. The web interface edition is paid, with a free trial period.
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