Harbor
Tenable
| Feature | Harbor | Tenable |
|---|---|---|
| Pricing | Free only | Free / from $3990/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.3 / 5 |
| Best For | enterprise-devops, container-teams, security-teams, regulated-industries | security-teams, compliance-officers, it-operations, vulnerability-managers |
| Founded | 2016 | 2002 |
| Container Registry | ✓ | ✗ |
| Vulnerability Scanning | ✓ | ✓ |
| Rbac | ✓ | ✗ |
| Image Signing | ✓ | ✗ |
| Replication | ✓ | ✗ |
| Garbage Collection | ✓ | ✗ |
| Audit Logs | ✓ | ✗ |
| Asset Discovery | ✗ | ✓ |
| Risk Prioritization | ✗ | ✓ |
| Compliance Reporting | ✗ | ✓ |
| Web App Scanning | ✗ | ✓ |
| Cloud Security | ✗ | ✓ |
✓ 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
✓ Tenable Pros
- Comprehensive vulnerability coverage
- Excellent asset discovery
- Good risk prioritization
- Strong compliance reporting
✗ Tenable Cons
- Expensive for large environments
- Complex initial setup
- Scanning can impact performance
The Verdict
Harbor is built for enterprise devops and container teams, with a focus on container-registry and vulnerability-scanning. Tenable targets security teams and compliance officers and leads with vulnerability-scanning and asset-discovery.
Harbor uses custom enterprise pricing, while Tenable starts at $3990/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, Harbor offers broader built-in capabilities (7 features vs 6), while Tenable takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for security teams — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
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.