Softwr

File Storage · head to head

Duplicati vs Flux

Duplicati logo

Duplicati

File Storage

Free open-source backup with encryption

From
Free
Rated
-
Full reviewWebsite
Flux logo

Flux

Cloud

GitOps continuous delivery for Kubernetes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Duplicati no managed service or commercial support; Flux no user interface of its own: observing what Flux is doing means CLI or a third-party dashboard
  • They diverge on capability: Duplicati covers AES-256 encryption, Flux covers Git as source of truth.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Duplicati and Flux actually diverge.

Attributes where Duplicati and Flux differ
AttributeDuplicatiFlux
Pricing modelUnknownOpen source, no licence fee
PlatformsWindows, macOS, LinuxKubernetes, Linux
CategoryFile StorageCloud
Founded2008Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 Flux

  • Git as source of truth
  • Pull-based delivery
  • Helm and Kustomize support
  • Automated image updates

What people use each for

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

Duplicati

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

Flux

  • Removing cluster credentials from CI systemsnot Duplicati
  • Keeping many clusters consistent with a single declared statenot Duplicati
  • Automatically correcting configuration drift rather than discovering it laternot 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

Flux

  • No user interface of its own: observing what Flux is doing means CLI or a third-party dashboard
  • Debugging a stuck reconciliation is harder than reading a pipeline log, because failure is asynchronous
  • Everything must be in Git, which is awkward for secrets and needs a sealed-secrets or external-secrets approach
  • GitOps is a workflow change, not just a tool, and teams used to imperative deploys find the adjustment real

Pricing, plan by plan

Duplicati

Free

No published plan breakdown. See the Duplicati review.

Flux

Free
  • FluxFree
    • Full functionality
    • No usage limits
    • Community support

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 Flux if

  • You need git as source of truth.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want pull-based delivery.
Flux review

Questions people ask

Is Duplicati or Flux better?
Neither clearly leads. Duplicati starts at Free and Flux at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Duplicati or Flux?
Duplicati starts at Free and Flux at Free.
Does Duplicati or Flux run on more platforms?
Duplicati runs on Windows, macOS, Linux. Flux runs on Kubernetes, Linux.
Can I use Duplicati for free?
Both have a free tier, so you can try either at no cost before committing.
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 Flux is typically brought in for.
What can Duplicati do that Flux cannot?
Duplicati covers AES-256 encryption, Incremental backup, Deduplication, Multiple cloud backends. Flux covers Git as source of truth, Pull-based delivery, Helm and Kustomize support, Automated image updates.

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
Flux: Is Flux free?

Yes, open source and CNCF-graduated.

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
Flux: Flux or Argo CD?

Both implement GitOps. Argo CD ships a strong web UI and is often preferred for visibility; Flux is more modular and composes as controllers, which suits platform teams.

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
Flux: Why is pull-based safer?

Because the cluster reaches out to Git rather than CI reaching into the cluster. No external system needs write credentials to production.

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