Platform Registry
Cloud-native registry that stores and scans the platform's container images and artifacts.
Objective
A private container/artifact registry under platform control — image storage, vulnerability scanning, replication, and signing for everything Kubernetes pulls.
Open Source Alternatives
Harbor — 9 / 10
Self-hosted CNCF graduated registry with Trivy scanning, Cosign signature support, retention policies, replication, and a proper UI. The only OSS option that competes feature-for-feature with managed cloud registries. Operational footprint is real but justified.
Zot — 7 / 10
Minimalist OCI registry. OSS, lighter than Harbor, fewer features. Right for very small or edge deployments.
Docker Distribution — 5 / 10
The reference OCI registry implementation. Bare-bones, no UI or scanning. Building block, not a product.
Quay (OSS) — 7 / 10
Red Hat-built OSS registry. Less actively evolving than Harbor; reasonable in Red Hat-aligned shops.
Managed SaaS Alternatives
GitHub Container Registry (GHCR) — 8 / 10
Bundled with GitHub. Free for public repos, integrated with GitHub Actions. Limited governance and not self-hosted; convenient when GitHub is the source of truth.
Amazon ECR — 8 / 10
AWS-managed registry. Excellent inside AWS; locked to AWS for IAM. Strong for AWS-native workloads.
JFrog Artifactory — 9 / 10
Enterprise multi-format artifact platform — containers, Maven, npm, generic. Premium pricing, deep enterprise feature set.
GitLab Registry — 7 / 10
Bundled with GitLab. Convenient if GitLab is the forge; less feature-rich than Harbor.
Docker Hub — 7 / 10
Public-first registry. Free tier rate-limited, less control. Useful for public images; weak for private platform use.
Quay.io — 7 / 10
Red Hat-hosted Quay. Convenient in Red Hat shops.
Google Artifact Registry (GAR) — 8 / 10
GCP-native registry. Strong inside GCP; locked to it.
Azure Container Registry (ACR) — 8 / 10
Azure-native registry. Same notes as ECR / GAR for Azure-locked workloads.
Harbor Cloud (various vendors) — 8 / 10
Managed Harbor hosting from third parties. Same OSS technical model, hosted.
Scoring summary
| Tool | Score | Type | Best for |
|---|---|---|---|
| Harbor | 9 | OSS | Self-hosted OSS registry |
| Artifactory | 9 | SaaS | Enterprise multi-format artifacts |
| GHCR | 8 | SaaS | GitHub-native, public repos |
| ECR | 8 | SaaS | AWS-native |
| GAR | 8 | SaaS | GCP-native |
| ACR | 8 | SaaS | Azure-native |
| Harbor Cloud | 8 | SaaS | Managed Harbor |
| GitLab Registry | 7 | SaaS | GitLab-bundled |
| Docker Hub | 7 | SaaS | Public images |
| Quay.io | 7 | SaaS | Red Hat-aligned |
| Quay (OSS) | 7 | OSS | Red Hat-aligned self-hosted |
| Zot | 7 | OSS | Minimalist OCI |
| Docker Distribution | 5 | OSS | Reference implementation |
Top in this category
Top OSS pick: Harbor. Top managed pick: Artifactory (enterprise) or cloud-native ECR/GAR/ACR (cloud-locked).
Harbor is the unambiguous top of OSS self-hosted registries. This stack’s pick is the category top.
Work Experience
