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Backup · head to head

AOMEI Backupper vs Kopia

AOMEI Backupper logo

AOMEI Backupper

Backup

Complete backup and restore solution for Windows

From
Free
Rated
-
Full reviewWebsite
Kopia logo

Kopia

Backup

Open source deduplicating backup with client side encryption and a repository on almost any storage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: AOMEI Backupper windows only, covering Windows 7 through 11; Kopia space is only reclaimed when maintenance runs, and in a shared repository full maintenance is owned by one client, so if that machine goes away the repository grows for ever while every backup still reports success.
  • They diverge on capability: AOMEI Backupper covers System backup, Kopia covers Content defined chunking.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which AOMEI Backupper and Kopia actually diverge.

Attributes where AOMEI Backupper and Kopia differ
AttributeAOMEI BackupperKopia
Pricing modelone-timeOpen source, no licence fee
PlatformsWindowsLinux, macOS, Windows, Docker
Founded2010Unknown

Identical on both: starting price (Free), free tier (Yes), 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 AOMEI Backupper

  • System backup
  • Disk clone
  • File sync
  • Real-time sync
  • Universal restore
  • Bootable media
  • OneDrive
  • Google Drive

Only in Kopia

  • Content defined chunking
  • Global deduplication
  • Pack blobs
  • Client side encryption
  • Desktop and command line
  • Repository verification

What people use each for

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

AOMEI Backupper

  • Free disk and file backup on a personal Windows machinenot Kopia
  • System image and bare metal recoverynot Kopia
  • Cloning a drive when upgrading to a larger disk on the paid editionsnot Kopia
  • Scheduled incremental backupsnot Kopia

Kopia

  • Backing up laptops and workstations to cheap object storage with a desktop interface rather than a cron jobnot AOMEI Backupper
  • Deduplicating backups of several similar machines into one repository so common content is stored oncenot AOMEI Backupper
  • Replacing a chunk based tool whose per object charges made a cheap bucket expensivenot AOMEI Backupper
  • Keeping an encrypted offsite copy where the storage provider must never be able to read the contentsnot AOMEI Backupper

Where each one falls short

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

AOMEI Backupper

  • Windows only, covering Windows 7 through 11
  • The free Standard edition is licensed for personal use; business use requires a paid edition from $39.95
  • Differential backup, cloud backup and system cloning are all withheld from the free edition, which clones data disks only
  • The free edition reads from disk more slowly than the paid ones
  • Email notifications on Standard are limited to Gmail and Hotmail servers
  • Support on the free edition is business hours rather than 24/7

Kopia

  • Space is only reclaimed when maintenance runs, and in a shared repository full maintenance is owned by one client, so if that machine goes away the repository grows for ever while every backup still reports success.
  • The repository format has changed across versions and mixing client versions against one repository is discouraged, so a fleet must be upgraded together rather than machine by machine.
  • There is no central orchestration or reporting for many machines, so monitoring a fleet means building your own alerting around exit codes.
  • Restoring many small files is slower than the backup was, because content must be reassembled from pack blobs, and this is rarely tested until the day it matters.
  • Encryption is client side with no escrow, so a lost repository password means the data is unrecoverable and there is no vendor to appeal to.

Pricing, plan by plan

AOMEI Backupper

Free
  • StandardFree
    • Free forever
    • 1 PC license
    • Data disk cloning only
  • Professional$39.95/one-time
    • 1 PC license
    • System clone
    • Differential backup
  • Workstation$49.95/one-time
    • 1 PC license
    • System clone
    • Differential backup

Kopia

Free
  • KopiaFree
    • Full functionality, no data limit
    • Desktop application included
    • Any supported storage back end

Which should you pick?

Choose AOMEI Backupper if

  • You need system backup.
  • You want to start without paying.
  • You work on Windows.
  • You also want disk clone.
AOMEI Backupper review

Choose Kopia if

  • You need content defined chunking.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker.
  • You also want global deduplication.
Kopia review

Questions people ask

Is AOMEI Backupper or Kopia better?
Neither clearly leads. AOMEI Backupper starts at Free and Kopia at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AOMEI Backupper or Kopia?
AOMEI Backupper starts at Free and Kopia at Free.
Does AOMEI Backupper or Kopia run on more platforms?
AOMEI Backupper runs on Windows. Kopia runs on Linux, macOS, Windows, Docker.
Can I use AOMEI Backupper for free?
Both have a free tier, so you can try either at no cost before committing.
What is AOMEI Backupper best used for?
AOMEI Backupper is most often used for free disk and file backup on a personal windows machine, system image and bare metal recovery, cloning a drive when upgrading to a larger disk on the paid editions, scheduled incremental backups. Of those, free disk and file backup on a personal windows machine and system image and bare metal recovery are not what Kopia is typically brought in for.
What can AOMEI Backupper do that Kopia cannot?
AOMEI Backupper covers System backup, Disk clone, File sync, Real-time sync. Kopia covers Content defined chunking, Global deduplication, Pack blobs, Client side encryption.

Answered from the vendors’ own pages

AOMEI Backupper: Is AOMEI Backupper free?

Yes, AOMEI Backupper Standard Edition is free forever. Professional Edition costs $39.95 and Workstation Edition costs $49.95 as one-time purchases, with a 90-day money-back guarantee.

Source
Kopia: Is a partly corrupt repository still restorable?

Partly. Deduplication means one damaged pack blob affects every snapshot referencing its contents, but unaffected files still restore. Run verification regularly rather than assuming.

AOMEI Backupper: Can AOMEI Backupper clone system drives?

System drive cloning requires Professional Edition ($39.95) or Workstation Edition ($49.95). The free Standard Edition supports data disk cloning only.

Source
Kopia: How does it compare with restic?

Similar guarantees, with packing that behaves better on per operation billing, a desktop interface, and compression enabled by default.

AOMEI Backupper: How many PCs can one AOMEI Backupper license cover?

Each AOMEI Backupper license covers 1 PC only. Separate licenses are required for multiple computers.

Source
Kopia: Do I need to run maintenance manually?

It is scheduled automatically by default, but you must ensure the client that owns full maintenance keeps running, otherwise deleted snapshots never free space.

AOMEI Backupper: What backup features are included in each edition?

Standard is free but limited to data disk cloning. Professional ($39.95) and Workstation ($49.95) both include system cloning, differential backup, and cloud backup. Workstation also offers faster task execution speeds.

Source
Kopia: Can several machines share one repository?

Yes, and that is where deduplication pays off, but they should run compatible versions and only one owns full maintenance.

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