Duplicacy vs Duplicati
A side-by-side comparison of two self-hosted backup & recovery options — licensing, setup difficulty, resource needs, and what each one replaces.
Duplicati
Free backup software with a friendly web UI
| Feature | Duplicacy | Duplicati |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 76 · Good | 95 · Excellent |
| Category | Backup & Recovery | Backup & Recovery |
| License | Proprietary | MIT |
| Language | Go | C# |
| Setup difficulty | Medium | Easy |
| Min. RAM | 256 MB | 256 MB |
| Deployment | binary, docker | docker, bare-metal |
| GitHub stars | ★ 5,683 | ★ 15,020 |
| First released | 2016 | 2008 |
| Replaces | Backblaze, Carbonite | Backblaze, Carbonite |
What are Duplicacy and Duplicati?
Duplicacy
Duplicacy is a cross-platform cloud backup tool using a novel lock-free deduplication algorithm for efficient encrypted backups. It targets users backing up to cloud storage. It is deployed as a binary with an optional web UI.
- Lock-free deduplication
- Many cloud backends
- Cross-computer deduplication
- Optional web GUI
Duplicati
Duplicati is free backup software that stores encrypted, incremental backups to cloud and local destinations through a web interface. It targets users who want scheduled GUI-driven backups. It is deployed via Docker or installers.
- Web-based backup management
- Encrypted incremental backups
- Many cloud storage targets
- Scheduling built in
Duplicacy vs Duplicati: key differences
Duplicacy is written in Go, while Duplicati is built with C#. Licensing differs — Proprietary for Duplicacy versus MIT for Duplicati. Duplicati is the more established project (first released 2008), while Duplicacy arrived in 2016. Duplicati has the considerably larger community, at 15,020 GitHub stars versus 5,683.
Why pick each one
Choose Duplicacy if…
- Efficient deduplication
- Good cloud support
- Reliable
Watch out for
- Web edition is paid
- CLI is free but licensed
Choose Duplicati if…
- Friendly GUI
- Broad storage support
- Free
Watch out for
- Restores can be slow
- Long beta history
Frequently asked questions
Is Duplicacy or Duplicati better?
Duplicati is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Duplicacy if its specific feature set fits your needs better.
Are Duplicacy and Duplicati free and open-source?
Yes. Duplicacy is licensed under Proprietary and Duplicati under MIT. Both can be self-hosted at no software cost.
Can I run Duplicacy and Duplicati with Docker?
Duplicacy: yes. Duplicati: yes.