Side by side
Harbor vs O3 Security Image Scanner
Both stand on container image scanning tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxSelf-hosted+1
Harbor combines artifact storage with access controls, scanning, and registry replication. Production deployments should use HTTPS, and authentication choices and robot account limits warrant attention.
Visit Harbor Free plan Web
Choose O3 Security Image Scanner if your team needs layered container image checks, SBOM output, or a registry gate for critical findings. Its price is available on request, so teams that need a published price should look elsewhere.
Visit O3 Security Image ScannerThe facts
| Harbor | O3 Security Image Scanner | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Self-hosted, Web | Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | goharbor.io | o3.security |
| On container image scanning tools | #5 of 29 | #9 of 29 |
Harbor: what it does well
- Free and open source.
- Deploys on Kubernetes or systems with Docker support.
- Supports image signing, validation, and vulnerability scanning.
- Replicates images and charts in pull or push mode.
What to know first
- Trivy scanning must be enabled during installation.
- Database authentication with local users prevents switching modes.
- Robot account secrets must be saved when created.
- Robot accounts cannot log into the user interface.
O3 Security Image Scanner: what it does well
- Scans Docker, OCI, and distroless images.
- Can scan on push, pull, or a recurring schedule.
- Finds secrets that remain in earlier image layers.
- Generates SBOMs in CycloneDX and SPDX formats.
- Can block production promotion when critical findings appear.
What to know first
- Pricing is available on request.
- The listed platform is web.
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