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OSSECCrowdSec
Free

Free and open source; the OSSEC+ edition is also free after registration.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Self-hosted Windows, Linux
  • Combines log analysis, file integrity monitoring and active response
  • Custom rules and scripts for tailored alerting
  • Supports community intelligence and configurable detection scenarios.
  • Configuration takes time to learn
  • Extra features such as machine learning need registration for OSSEC+
  • Traffic blocking requires the appropriate enforcement integration.
Self-hosted Downloadable app
Open source Open source
License not stated License: MIT
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.