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

[Pi](https://cybersectools.com/tools/pi) is a commercial [application security posture management](https://cybersectools.com/categories/aspm) solution by [Pi](https://cybersectools.com/companies/pi). [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

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

### Use cases and capabilities

| | Pi | Security Onion Pro |
|---|---|---|
| App Security | Yes | – |
| DevSecOps | Yes | – |
| Vulnerability | Yes | – |
| Threat Modeling | Yes | – |
| Triage | Yes | – |
| Agentic AI Security | Yes | – |
| Secure Development | Yes | – |
| CI/CD | Yes | – |
| Source Code Analysis | Yes | – |
| Vulnerability Prioritization | 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

**Pi**

8 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

**Pi**

1 integration 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.

- [Pi](https://cybersectools.com/tools/pi) fits if you want a cloud product and you are a small business.
- [Security Onion Pro](https://cybersectools.com/tools/security-onion-pro) fits if you need to run it on your own servers.

## Pi vs Security Onion Pro FAQ

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

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

**Pi**: Agentic product security platform that prevents recurring vulns via institutional memory. Built by Pi.

**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 Pi and Security Onion Pro?

**Pi** is made by Pi. **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 Pi a good alternative to Security Onion Pro?

In part. Pi 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

- [Pi vs AppSecAI](https://cybersectools.com/compare/appsecai-vs-pi)
- [Pi vs DefectDojo](https://cybersectools.com/compare/defectdojo-vs-pi)
- [Pi vs Cytix](https://cybersectools.com/compare/cytix-vs-pi)
- [Security Onion Pro vs AppSecAI](https://cybersectools.com/compare/appsecai-vs-security-onion-pro)
- [Security Onion Pro vs DefectDojo](https://cybersectools.com/compare/defectdojo-vs-security-onion-pro)
- [Security Onion Pro vs Cytix](https://cybersectools.com/compare/cytix-vs-security-onion-pro)

## Alternatives to each

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

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Source: https://cybersectools.com/compare/pi-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/pi.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Pi 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