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File Storage · head to head

Duplicati vs Nasuni

Duplicati logo

Duplicati

File Storage

Free open-source backup with encryption

From
Free
Rated
-
Full reviewWebsite
Nasuni logo

Nasuni

File Storage

Cloud file storage that keeps the authoritative copy in object storage and caches it at each site

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Duplicati has a free tier, so it costs nothing to try first.
  • Each has a real cost: Duplicati no managed service or commercial support; Nasuni subscription is based on managed capacity, so cold data that would cost almost nothing in an archive tier keeps paying the full platform rate, and there is limited incentive structure to delete.
  • They diverge on capability: Duplicati covers AES-256 encryption, Nasuni covers Edge caching appliances.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Duplicati and Nasuni actually diverge.

Attributes where Duplicati and Nasuni differ
AttributeDuplicatiNasuni
Starting priceFreeOn request
Pricing modelUnknownquote
Free tierYesNo
PlatformsWindows, macOS, LinuxWeb, Windows, VMware, Hyper-V, AWS, Azure
Founded2008Unknown

Identical on both: user rating (Not yet rated), category (File Storage).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Duplicati

  • AES-256 encryption
  • Incremental backup
  • Deduplication
  • Multiple cloud backends
  • Compression
  • Web interface
  • AWS S3
  • Azure

Only in Nasuni

  • Edge caching appliances
  • Object storage back end
  • Continuous versioning
  • Global file lock
  • Rapid site recovery
  • Ransomware detection

What people use each for

The jobs each tool is most often brought in to do.

Duplicati

  • Data protectionnot Nasuni
  • Disaster recoverynot Nasuni
  • Business continuitynot Nasuni
  • Ransomware protectionnot Nasuni
  • Compliancenot Nasuni

Nasuni

  • Consolidating file servers across many branch offices onto one namespace without shipping data between sitesnot Duplicati
  • Replacing a NAS plus backup plus offsite replication stack with a single recovery modelnot Duplicati
  • Engineering or media teams in different regions who need to work on the same large project filesnot Duplicati
  • An organisation that has been hit by ransomware on file shares and needs version level rollback rather than tape restoresnot Duplicati

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Duplicati

  • No managed service or commercial support
  • Relies on community support
  • No enterprise features

Nasuni

  • Subscription is based on managed capacity, so cold data that would cost almost nothing in an archive tier keeps paying the full platform rate, and there is limited incentive structure to delete.
  • Every site needs an appliance, virtual or physical, which is a footprint and a patching obligation at locations that previously had only a file server or nothing.
  • A read that misses the local cache is fetched from object storage, so the first access to a cold large file is at cloud latency and users experience it as the system being slow at random.
  • Global file lock serialises access across regions, so genuinely collaborative editing of the same large files still involves waiting for another site to release the lock rather than merging.
  • The object storage underneath is your contract, so API transaction and egress charges from Azure or AWS land on your cloud bill and are not covered by the Nasuni subscription you were quoted against.

Pricing, plan by plan

Duplicati

Free

No published plan breakdown. See the Duplicati review.

Nasuni

On request
  • Nasuni File Data Platform$undefined/year
    • Subscription based on managed capacity
    • Edge appliances at each site
    • Continuous versioning and rapid recovery

Which should you pick?

Choose Duplicati if

  • You need aes-256 encryption.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want incremental backup.
Duplicati review

Choose Nasuni if

  • You need edge caching appliances.
  • You work on Web, Windows, VMware, Hyper-V, AWS, Azure.
  • You also want object storage back end.
Nasuni review

Questions people ask

Is Duplicati or Nasuni better?
Neither clearly leads. Duplicati starts at Free and Nasuni at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Duplicati or Nasuni?
Duplicati has a free tier; the other does not. Paid plans start at Free for Duplicati and On request for Nasuni.
Does Duplicati or Nasuni run on more platforms?
Duplicati runs on Windows, macOS, Linux. Nasuni runs on Web, Windows, VMware, Hyper-V, AWS, Azure.
Can I use Duplicati for free?
Yes. Duplicati has a free tier, so you can try it without paying. Nasuni starts at On request.
What is Duplicati best used for?
Duplicati is most often used for data protection, disaster recovery, business continuity, ransomware protection. Of those, data protection and disaster recovery are not what Nasuni is typically brought in for.
What can Duplicati do that Nasuni cannot?
Duplicati covers AES-256 encryption, Incremental backup, Deduplication, Multiple cloud backends. Nasuni covers Edge caching appliances, Object storage back end, Continuous versioning, Global file lock.

Answered from the vendors’ own pages

Duplicati: Is Duplicati free?

Yes. Duplicati is completely free and open-source under the LGPL license. There are no premium tiers, trials, or limitations.

Source
Nasuni: Do I still need a backup product?

That is the pitch: continuous versioning in object storage replaces the backup schedule for file data. Databases and virtual machines still need their own tooling.

Duplicati: What does Duplicati support?

Duplicati supports zero-trust, fully encrypted backups to local storage, network drives, and cloud services. It includes deduplication and incremental backups.

Source
Nasuni: Who owns the storage account?

You do. Nasuni writes into object storage you contract for, which also means the cloud provider bills you directly for it.

Duplicati: What are the platforms?

Duplicati runs on Windows, macOS, and Linux. It can back up data to local storage, network drives, or cloud providers.

Source
Nasuni: How fast is recovery of a whole site?

An appliance can be serving files within hours because data is pulled on demand, but performance stays degraded while the cache refills.

Nasuni: Is pricing published?

No. Nasuni sells through quotes based on managed capacity and site count, so comparisons need a real proposal rather than a list price.

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