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Head-to-head · Container Registries

Harbor vs Zot Registry

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Harbor #1 in Container Registries 9.4/10 Open source ✓ 4 of 4 features Visit Harbor
Zot Registry #4 in Container Registries 9.1/10 Open source ✓ 4 of 4 features Visit Zot Registry

Harbor leads on 0 checks, Zot Registry on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreHarbor · 9.4/10

Harbor scores higher on our rubric for container registries: 9.4 against 9.1 out of 10; our editors rank them #1 and #4.

Harbor is the better fit for teams wanting a capable open-source registry. Zot Registry is the better fit for self-hosted teams needing scalable OCI features.

  • Harbor fits best

    Teams wanting a capable open-source registry

  • Zot Registry fits best

    Self-hosted teams needing scalable OCI features

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Harbor 9.4/10 Visit ↗ Zot Registry 9.1/10 Visit ↗
At a glance
Editor score 9.4 9.1
Ranking #1 in Container Registries #4 in Container Registries
Best for Teams wanting a capable open-source registry Self-hosted teams needing scalable OCI features
Pricing model Free Free
Starting price Open source Open source
Free plan Not checked yet Not checked yet
Free trial — —
Deployment Self-hosted Cloud, Self-hosted
Platforms Web, Linux Web, Linux
Support Community, Docs Docs
Integrations 9 integrations 6 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Harbor 4/4 · Zot Registry 4/4
Image scanning ✓ ✓
OCI artifacts ✓ ✓
Immutable tags ✓ ✓
Retention policies ✓ ✓
Specs
Replication scope Not checked yet Not checked yet
Included storage Not checked yet Not checked yet
Maximum image size Not checked yet Not checked yet
Our review
Pros
  • Supports OCI images, indexes, and other OCI artifacts
  • Combines scanning, signing, immutability, retention, and RBAC
  • Replicates with Harbor and other major registries
  • Supports OCI images, artifacts, Helm charts, and standard registry clients
  • Adds Trivy scanning, retention policies, and immutable tag protection
  • Offers mirroring, multiple storage backends, clustering, and garbage collection
Cons
  • Requires self-hosted deployment and ongoing administration
  • No AI features for AI-assisted registry workflows
  • Web and API access still depend on your hosting environment
  • Requires teams to operate it as self-hosted software
  • Clustering uses stateless replicas with shared remote storage
  • Vulnerability scanning is focused on stored images through Trivy
Our verdict

Harbor is a self-hosted, open-source container registry for organizations managing container images and cloud-native artifacts. It fits teams that want control over deployment and registry policies without a proprietary license. Projects…

Read the review →

Zot Registry is an open-source, vendor-neutral registry for storing and distributing container images and other OCI artifacts. It implements the OCI Distribution Specification and runs as self-hosted software on Linux or macOS. Its…

Read the review →
  1. HarborContainer Registries 9.4Open source
  2. Zot RegistryContainer Registries 9.1Open source

Strengths and trade-offs

  • Harbor — where it wins

    • Supports OCI images, indexes, and other OCI artifacts
    • Combines scanning, signing, immutability, retention, and RBAC
    • Replicates with Harbor and other major registries

    Where it doesn't

    • Requires self-hosted deployment and ongoing administration
    • No AI features for AI-assisted registry workflows
    • Web and API access still depend on your hosting environment

  • Zot Registry — where it wins

    • Supports OCI images, artifacts, Helm charts, and standard registry clients
    • Adds Trivy scanning, retention policies, and immutable tag protection
    • Offers mirroring, multiple storage backends, clustering, and garbage collection

    Where it doesn't

    • Requires teams to operate it as self-hosted software
    • Clustering uses stateless replicas with shared remote storage
    • Vulnerability scanning is focused on stored images through Trivy

More comparisons

All container registries comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update