Best Microsoft Sentinel Alternatives in 2026
8 cloud siem tools compared against Microsoft Sentinel on features, pricing, and deployment model.
Why look for Microsoft Sentinel alternatives?
Microsoft Sentinel is a strong option for cloud siem, but it's not the right fit for every team. Common reasons teams look elsewhere: per-gb costs can spike with non-microsoft data sources; kql learning curve for teams used to other query languages.
Below we list 8 alternatives, broken down by deployment model. All data is aggregated from official documentation and community feedback.
Open Source Alternatives to Microsoft Sentinel
Open-source SIEM and security analytics built on the ELK Stack
Graylog
OSSOpen-source log management and SIEM platform with intuitive analytics
Cloud-Managed Alternatives
Enterprise SIEM and security analytics platform for threat detection and incident response
Cloud-native SIEM and security analytics with automated threat detection
Unified security and observability platform with cloud SIEM and posture management
Self-Hosted Alternatives
Open-source SIEM and security analytics built on the ELK Stack
AI-powered enterprise SIEM with automated threat detection and investigation
Graylog
OSSOpen-source log management and SIEM platform with intuitive analytics
Unified SIEM platform with threat lifecycle management and built-in SOAR
Behavioral analytics SIEM with automated investigation and response