# Checkmarx One Assist vs Security Onion Pro: side-by-side comparison (2026) [Checkmarx One Assist](https://cybersectools.com/tools/checkmarx-one-assist) is a commercial [application security posture management](https://cybersectools.com/categories/aspm) solution by [Checkmarx](https://cybersectools.com/companies/checkmarx). [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 | | Checkmarx One Assist | 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 | Checkmarx | Security Onion Solutions | | Headquarters | – | – | ### Use cases and capabilities | | Checkmarx One Assist | Security Onion Pro | |---|---|---| | CI/CD | Yes | – | | DevSecOps | Yes | – | | SCA | Yes | – | | Secret Detection | Yes | – | | Infrastructure as Code | 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 **Checkmarx One Assist** 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 **Checkmarx One Assist** 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. - [Checkmarx One Assist](https://cybersectools.com/tools/checkmarx-one-assist) 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. ## Checkmarx One Assist vs Security Onion Pro FAQ Common questions when comparing Checkmarx One Assist vs Security Onion Pro for application security posture management. ### What is the difference between Checkmarx One Assist and Security Onion Pro? **Checkmarx One Assist**: AI-powered AppSec platform with agentic agents for vulnerability prevention & fix. Built by Checkmarx. **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 Checkmarx One Assist and Security Onion Pro? **Checkmarx One Assist** is made by Checkmarx. **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 Checkmarx One Assist a good alternative to Security Onion Pro? In part. Checkmarx One Assist 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 - [Checkmarx One Assist vs Legit VibeGuard](https://cybersectools.com/compare/checkmarx-one-assist-vs-legit-vibeguard) - [Checkmarx One Assist vs JFrog Advanced Security](https://cybersectools.com/compare/checkmarx-one-assist-vs-jfrog-advanced-security) - [Checkmarx One Assist vs Cantina Apex](https://cybersectools.com/compare/cantina-apex-vs-checkmarx-one-assist) - [Security Onion Pro vs Legit VibeGuard](https://cybersectools.com/compare/legit-vibeguard-vs-security-onion-pro) - [Security Onion Pro vs JFrog Advanced Security](https://cybersectools.com/compare/jfrog-advanced-security-vs-security-onion-pro) - [Security Onion Pro vs Cantina Apex](https://cybersectools.com/compare/cantina-apex-vs-security-onion-pro) ## Alternatives to each - [See all Checkmarx One Assist alternatives](https://cybersectools.com/alternatives/checkmarx-one-assist) - [See all Security Onion Pro alternatives](https://cybersectools.com/alternatives/security-onion-pro) --- Source: https://cybersectools.com/compare/checkmarx-one-assist-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/checkmarx-one-assist.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Checkmarx One Assist 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