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