IBM QRadar SIEM vs StreamAlert: side-by-side comparison (2026)

IBM QRadar SIEM: SIEM platform for centralized security visibility and threat detection. Built by IBM.

StreamAlert: Serverless, real-time data analysis framework for incident detection and response.

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

IBM QRadar SIEM is made by IBM. StreamAlert is open-source with 2,886 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. IBM QRadar SIEM and StreamAlert are both Security Information and Event Management products, and both cover Log Management. Key differences: IBM QRadar SIEM is Commercial while StreamAlert is Free, StreamAlert is open-source. Use the table above to see where features, deployment and company size fit differ.