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OSSEC vs AIDE: catalog facts
OSSEC	AIDE
Free Free and open source; the OSSEC+ edition is also free after registration.	Free Free to download as source releases from GitHub.
Self-hosted	Linux, Command line
Combines log analysis, file integrity monitoring and active response Custom rules and scripts for tailored alerting	Detects changes to file contents, permissions and timestamps Flexible regular-expression rules for what to monitor
Configuration takes time to learn Extra features such as machine learning need registration for OSSEC+	Command-line only, with no graphical interface Needs a trusted baseline and rule tuning to avoid noisy reports
Self-hosted	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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