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OSSECVelociraptor
Free

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

 Free

The software is free under its open-source licence. Hosting, hardware and external…

Self-hosted Windows, macOS, Linux
  • Combines log analysis, file integrity monitoring and active response
  • Custom rules and scripts for tailored alerting
  • Its query language lets you collect arbitrary host state across a whole fleet on demand, and a single…
  • Configuration takes time to learn
  • Extra features such as machine learning need registration for OSSEC+
  • Writing useful collections means learning its query language, and a fleet deployment needs real planning.
Self-hosted Downloadable app
Open source Open source
License not stated License: AGPL-3.0
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.