Harbor
Kong
| Feature | Harbor | Kong |
|---|---|---|
| Pricing | Free only | Free / from $0.05/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.3 / 5 |
| Best For | enterprise-devops, container-teams, security-teams, regulated-industries | platform-engineers, microservices-teams, api-gateway-users, devops-teams |
| Founded | 2016 | 2010 |
| Container Registry | ✓ | ✗ |
| Vulnerability Scanning | ✓ | ✗ |
| Rbac | ✓ | ✗ |
| Image Signing | ✓ | ✗ |
| Replication | ✓ | ✗ |
| Garbage Collection | ✓ | ✗ |
| Audit Logs | ✓ | ✗ |
| Api Gateway | ✗ | ✓ |
| Service Mesh | ✗ | ✓ |
| Load Balancing | ✗ | ✓ |
| Authentication | ✗ | ✓ |
| Rate Limiting | ✗ | ✓ |
| Plugins | ✗ | ✓ |
| Observability | ✗ | ✓ |
| Kubernetes Ingress | ✗ | ✓ |
✓ Harbor Pros
- Completely free and CNCF graduated project
- Built-in vulnerability scanning (Trivy integration)
- Image signing and policy enforcement
- Multi-registry replication for geo-distribution
✗ Harbor Cons
- Requires self-hosting and infrastructure management
- UI is functional but not modern
- Initial setup complexity for production
✓ Kong Pros
- Open-source core with large plugin ecosystem
- Sub-millisecond latency for API requests
- Platform-agnostic deployment (cloud, on-prem, hybrid)
- Strong Kubernetes-native support
✗ Kong Cons
- Enterprise features require paid license
- Configuration complexity for advanced setups
- Documentation could be more beginner-friendly
The Verdict
Harbor is built for enterprise devops and container teams, with a focus on container-registry and vulnerability-scanning. Kong targets platform engineers and microservices teams and leads with api-gateway and service-mesh.
Harbor uses custom enterprise pricing, while Kong starts at $0.05/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Kong offers broader built-in capabilities (8 features vs 7), while Harbor takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.