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Security Onion vs RITA: catalog facts
Security Onion	RITA
Freemium The platform is free, while Onion AI features are offered through sales representatives.	Free Free to download from its public GitHub repository.
Linux, Self-hosted	Linux, Command line
Complete monitoring platform installed from a single ISO Includes packet capture, detection rules and threat hunting	Focused on detecting beaconing and command and control traffic Includes an importer, analysis and a results viewer
Needs dedicated hardware or virtual machines and setup time Onion AI details are only available through sales	Requires existing network traffic logs to analyse Command-line setup aimed at security professionals
Self-hosted, Operating system	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.