# DefectDojo vs Security Onion Pro: side-by-side comparison (2026)

[DefectDojo](https://cybersectools.com/tools/defectdojo) is a commercial [application security posture management](https://cybersectools.com/categories/aspm) solution by [DefectDojo](https://cybersectools.com/companies/defectdojo). [Security Onion Pro](https://cybersectools.com/tools/security-onion-pro) is a commercial [security information and event management](https://cybersectools.com/categories/security-information-and-event-management-siem) solution by [Security Onion Solutions](https://cybersectools.com/companies/security-onion-solutions). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | DefectDojo | Security Onion Pro |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Application Security Posture Management | Security Information and Event Management |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | DefectDojo | Security Onion Solutions |
| Headquarters | – | – |

### Use cases and capabilities

| | DefectDojo | Security Onion Pro |
|---|---|---|
| Vulnerability | Yes | – |
| Vulnerability Prioritization | Yes | – |
| DevSecOps | Yes | – |
| Open Source | Yes | – |
| Security Reporting | Yes | – |
| Triage | Yes | – |
| CI/CD | Yes | – |
| App Security | Yes | – |
| Security Orchestration | Yes | – |
| NDR | – | Yes |
| SSO | – | Yes |
| Encryption | – | Yes |
| MITRE ATT&CK | – | Yes |
| YARA | – | Yes |
| Sigma | – | Yes |
| Suricata | – | Yes |
| Case Management | – | Yes |
| AI Copilot | – | Yes |
| osquery | – | Yes |

### Core features

**DefectDojo**

10 features listed. Sign in on the page to see them.

**Security Onion Pro**

10 features listed. Sign in on the page to see them.

### Integrations

**DefectDojo**

50 integrations listed. Sign in on the page to see them.

**Security Onion Pro**

12 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [DefectDojo](https://cybersectools.com/tools/defectdojo) fits if you need both cloud and on-premises options and you are a startup or a small business.
- [Security Onion Pro](https://cybersectools.com/tools/security-onion-pro) fits if you need to run it on your own servers.

## DefectDojo vs Security Onion Pro FAQ

Common questions when comparing DefectDojo vs Security Onion Pro for application security posture management.

### What is the difference between DefectDojo and Security Onion Pro?

**DefectDojo**: Open-source vuln management platform with automated triage and ASPM. Built by DefectDojo.

**Security Onion Pro**: Commercial license tier adding enterprise features and support to Security Onion NSM/SIEM. Built by Security Onion Solutions.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes DefectDojo and Security Onion Pro?

**DefectDojo** is made by DefectDojo. **Security Onion Pro** is made by Security Onion Solutions. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is DefectDojo a good alternative to Security Onion Pro?

In part. DefectDojo and Security Onion Pro are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [DefectDojo vs AppSecAI](https://cybersectools.com/compare/appsecai-vs-defectdojo)
- [DefectDojo vs Pi](https://cybersectools.com/compare/defectdojo-vs-pi)
- [DefectDojo vs Archipelo DevSPM Platform](https://cybersectools.com/compare/archipelo-devspm-platform-vs-defectdojo)
- [Security Onion Pro vs AppSecAI](https://cybersectools.com/compare/appsecai-vs-security-onion-pro)
- [Security Onion Pro vs Pi](https://cybersectools.com/compare/pi-vs-security-onion-pro)
- [Security Onion Pro vs Archipelo DevSPM Platform](https://cybersectools.com/compare/archipelo-devspm-platform-vs-security-onion-pro)

## Alternatives to each

- [See all DefectDojo alternatives](https://cybersectools.com/alternatives/defectdojo)
- [See all Security Onion Pro alternatives](https://cybersectools.com/alternatives/security-onion-pro)

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Source: https://cybersectools.com/compare/defectdojo-vs-security-onion-pro

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/defectdojo.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on DefectDojo and Security Onion Pro: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md