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Kopia vs restic

Kopia lands on Worth it, and restic lands on Depends.

Kopia

kopia.io

Worth it
Confidence: Medium

Free, fast, encrypted open-source backup that technical users and self-hosters love.

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restic

restic.net

Depends
Confidence: Medium

Use it if you're technical and want free, encrypted, deduplicated backups to any storage backend.

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Kopia versus restic
CompareKopiarestic
VerdictWorth itDepends
Best forSelf-hosters and NAS ownersSelf-hosters and homelab admins
Who it's not forNon-technical users wanting set-and-forget backups . use Backblaze or Time MachineNon-technical users wanting point-and-click backups
PrivacyEncrypted by default; one critical server RCE (CVE-2026-45695) fixed in 0.23.0 . run the latest version.⁷No known public vulnerabilities found in the sources reviewed.
Support qualityCommunity forums only; no paid supportCommunity forum only, no vendor
Public sentimentOverwhelmingly positive among self-hosters and technical users who praise its speed, with a minority reporting defaults and performance issues.³Homelab and developer communities widely praise restic's encryption and snapshot model, with GUI polish the recurring complaint.13
Biggest gotchaPatch to 0.23.0+ before running Kopia server; unauthenticated RCE (CVE-2026-45695)No vendor support; the community forum is your helpdesk

Pick Kopia when

  • Self-hosters and NAS owners
  • Multi-OS households and small offices
  • Developers backing up to S3/B2
  • Privacy-focused users wanting encrypted dedup

When Kopia is not a fit

  • Non-technical users wanting set-and-forget backups . use Backblaze or Time Machine
  • Businesses needing vendor SLAs and support contracts
  • Anyone who won't promptly patch an internet-exposed Kopia server
  • Guess: enterprises needing certified compliance and managed backup

Pick restic when

  • Self-hosters and homelab admins
  • Developers scripting server backups
  • Kubernetes data protection
  • Encrypted backups to S3/cloud

When restic is not a fit

  • Non-technical users wanting point-and-click backups
  • Teams needing vendor SLA support contracts
  • Anyone unwilling to maintain backup scripts
  • Windows users wanting a polished restore GUI

Sources

  1. Kopia official sitekopia.io
    official
  2. Kopia GitHub repositorygithub.com
    official
  3. Kopia is brilliant : r/selfhostedreddit.com
    review
  4. Kopia is by far the fastest backup tool . LowEndTalklowendtalk.com
    review
  5. MakeUseOf: open-source backup reviewmakeuseof.com
    review
  6. Kopia Backup RCE Vulnerability . Orca Securityorca.security
    security
  7. CVE-2026-45695 . NVDnvd.nist.gov
    security
  8. Dangerous default settings cause backup failures . GitHub issuegithub.com
    review
  9. Duplicati vs Duplicacy vs Kopia vs Vorta comparisonforum.duplicati.com
    review
  10. macOS backups with Kopia and Backblazehmarr.com
    review
  11. restic · Backups done right! (official)restic.net
    official
  12. Restic: Backups done right . Hacker Newsnews.ycombinator.com
    review
  13. Restic - Backups Done Right . Hacker Newsnews.ycombinator.com
    review
  14. Restic backups done right: encryption, retention, browsing . Vantaxvantax.eu
    review
  15. 25 Free and Open-source Data Backup Solutions . Medevelmedevel.com
    news
  16. Restic Backups wrapper scripts . GitLabgitlab.com
    review