CircleCI
Harbor
| Feature | CircleCI | Harbor |
|---|---|---|
| Pricing | Free / from $15/mo | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.3 / 5 |
| Best For | development-teams, open-source-projects, startups, saas-companies | enterprise-devops, container-teams, security-teams, regulated-industries |
| Founded | 2011 | 2016 |
| Ci Cd Pipelines | ✓ | ✗ |
| Docker Support | ✓ | ✗ |
| Caching | ✓ | ✗ |
| Parallelism | ✓ | ✗ |
| Orbs | ✓ | ✗ |
| Test Splitting | ✓ | ✗ |
| Insights Dashboard | ✓ | ✗ |
| Ssh Debugging | ✓ | ✗ |
| Container Registry | ✗ | ✓ |
| Vulnerability Scanning | ✗ | ✓ |
| Rbac | ✗ | ✓ |
| Image Signing | ✗ | ✓ |
| Replication | ✗ | ✓ |
| Garbage Collection | ✗ | ✓ |
| Audit Logs | ✗ | ✓ |
✓ CircleCI Pros
- Fast build times with powerful caching
- Excellent Docker support and layer caching
- Free tier includes 6,000 build minutes/month
- Orbs marketplace for reusable configuration
✗ CircleCI Cons
- Credit-based pricing can be confusing
- Debugging failed builds requires SSH access
- Configuration YAML can become complex
✓ 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
The Verdict
CircleCI is built for development teams and open source projects, with a focus on ci-cd-pipelines and docker-support. Harbor targets enterprise devops and container teams and leads with container-registry and vulnerability-scanning.
Harbor uses custom enterprise pricing, while CircleCI starts at $15/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, CircleCI 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.