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Backup · head to head

Duplicacy vs Spanning Backup

Duplicacy logo

Duplicacy

Backup

Lock-free deduplication cloud backup

From
Free
Rated
-
Full reviewWebsite
Spanning Backup logo

Spanning Backup

Backup

SaaS backup for Google Workspace and Microsoft 365

From
$4/month
Rated
-
Full reviewWebsite

The short version

  • Only Duplicacy has a free tier, so it costs nothing to try first.
  • Each has a real cost: Duplicacy web GUI pricing tier not specified on product page; Spanning Backup no pricing published; requires quote request
  • They diverge on capability: Duplicacy covers Lock-free deduplication, Spanning Backup covers Automated daily backup.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Duplicacy and Spanning Backup actually diverge.

Attributes where Duplicacy and Spanning Backup differ
AttributeDuplicacySpanning Backup
Starting priceFree$4/month
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsmacOS, Linux, WindowsCloud SaaS
Founded20162010

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

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 Duplicacy

  • Lock-free deduplication
  • Client-side encryption
  • Multiple computers
  • Erasure coding
  • Variable-size chunking
  • RSA encryption
  • AWS S3
  • Azure

Only in Spanning Backup

  • Automated daily backup
  • Point-in-time restore
  • Cross-user restore
  • eDiscovery
  • Unlimited storage
  • Admin delegation
  • Google Workspace
  • Microsoft 365

Both cover

  • Web support

What people use each for

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

Duplicacy

  • Client-side encrypted cloud backupsnot Spanning Backup
  • Lock-free deduplication for efficient backup storagenot Spanning Backup
  • Multi-destination backup supportnot Spanning Backup

Spanning Backup

  • SaaS backup and recoverynot Duplicacy
  • Microsoft 365 backupnot Duplicacy
  • Google Workspace backupnot Duplicacy
  • Salesforce backupnot Duplicacy

Where each one falls short

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

Duplicacy

  • Web GUI pricing tier not specified on product page

Spanning Backup

  • No pricing published; requires quote request
  • Pricing is customizable based on data volume and service changes

Pricing, plan by plan

Duplicacy

Free

No published plan breakdown. See the Duplicacy review.

Spanning Backup

$4/month
  • Spanning Backup$4/month
    • Daily backup
    • Point-in-time restore
    • Unlimited storage

Which should you pick?

Choose Duplicacy if

  • You need lock-free deduplication.
  • You want to start without paying.
  • You work on macOS, Linux, Windows.
  • You also want client-side encryption.
Duplicacy review

Choose Spanning Backup if

  • You need automated daily backup.
  • You work on Cloud SaaS.
  • You also want point-in-time restore.
Spanning Backup review

Questions people ask

Is Duplicacy or Spanning Backup better?
Neither clearly leads. Duplicacy starts at Free and Spanning Backup at $4/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Duplicacy or Spanning Backup?
Duplicacy has a free tier; the other does not. Paid plans start at Free for Duplicacy and $4/month for Spanning Backup.
Does Duplicacy or Spanning Backup run on more platforms?
Duplicacy runs on macOS, Linux, Windows. Spanning Backup runs on Cloud SaaS.
Can I use Duplicacy for free?
Yes. Duplicacy has a free tier, so you can try it without paying. Spanning Backup starts at $4/month.
What is Duplicacy best used for?
Duplicacy is most often used for client-side encrypted cloud backups, lock-free deduplication for efficient backup storage, multi-destination backup support. Of those, client-side encrypted cloud backups and lock-free deduplication for efficient backup storage are not what Spanning Backup is typically brought in for.
What can Duplicacy do that Spanning Backup cannot?
Duplicacy covers Lock-free deduplication, Client-side encryption, Multiple computers, Erasure coding. Spanning Backup covers Automated daily backup, Point-in-time restore, Cross-user restore, eDiscovery. Both handle Web support.

Answered from the vendors’ own pages

Duplicacy: What is the cost of the Duplicacy command line version for commercial use?

The commercial license for Duplicacy's command line version costs $50 per machine per year. The CLI version is free for individual users.

Source
Spanning Backup: How much does Spanning Backup cost?

Spanning Backup does not publish pricing online. The company offers FLEXspend, a feature that gives complete flexibility in adjusting backup spend based on data changes. Customers must request a quote through their pricing page.

Source
Duplicacy: Is pricing available for the Duplicacy Web GUI edition?

No pricing information is provided for the Web Edition (GUI) on the Duplicacy website. You would need to contact [email protected] for Web Edition pricing details.

Source
Spanning Backup: Does Spanning Backup offer a free trial?

Yes, Spanning Backup offers a free trial. Customers can also book a call or request a demo to discuss their specific backup needs and receive a custom quote.

Source
Duplicacy: Are volume discounts available for IT service providers?

Yes, volume discounts are available for IT service providers and resellers. Contact [email protected] to discuss volume pricing options.

Source
Spanning Backup: What products does Spanning Backup cover?

Spanning Backup provides backup solutions for Microsoft 365, Google Workspace, and Salesforce with customizable pricing based on organizational needs.

Source
Duplicacy: What backup modes and features are included in the free version?

The free version includes file, disk, partition, and system backup with full, incremental, and differential backup modes. It also offers scheduled backups, encryption, and emergency disk creation.

Source
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