View all SIEM / UEBA Alternatives
Best Free Alternatives to InsightIDR (Rapid7)
Stop paying $2,000 - $4,000 per month (varies by asset count). Discover professional-grade tools that won't break your budget.
Category: SIEM / UEBAVerified for 2025
Top Recommended Replacements
Wazuh
FREEBest Endpoint Alternative
Why we like it
Replaces the 'Insight Agent' completely; offers File Integrity Monitoring (FIM), Vulnerability Detection, and Active Response (killing malicious processes) for free; feeds data into a beautiful dashboard.
Keep in mind
Lacks the pre-built 'User Behavior' models of InsightIDR (you must write rules to detect 'impossible travel').
Elastic Security (ELK)
FREEBest Analytics Alternative
Why we like it
The engine that powers many modern SIEMs; excellent for searching millions of logs instantly; 'Detection Rules' repo is open-source and frequently updated by the community.
Keep in mind
The advanced 'Machine Learning' nodes (required for automated UEBA) are part of the paid Platinum license.
Velociraptor
FREEBest Forensics Tool
Why we like it
The exact digital forensics engine used *inside* InsightIDR (Rapid7 owns it); allows you to 'hunt' for threats across thousands of machines instantly (e.g., 'Find this specific file hash').
Keep in mind
It is a hunting tool, not a continuous monitoring SIEM.
Security Onion
FREEBest Network Monitor
Why we like it
If you used InsightIDR for network visibility, this is better; bundles Suricata and Zeek to sniff traffic and find attackers moving laterally through your network.
Keep in mind
Requires a dedicated heavy server to run.
LimaCharlie
Best 'Build Your Own' XDR
Why we like it
Unbundled security infrastructure; you pay only for the sensors you use (pennies per month); widely used by MSSPs to build custom detection pipelines without the Rapid7 markup.
Keep in mind
Requires security engineering knowledge to configure effectively.
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