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Security Onion vs Arkime: catalog facts
Security OnionArkime
Freemium

The platform is free, while Onion AI features are offered through sales representatives.

Free

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

Linux, Self-hosted Linux, Self-hosted, Web
  • Complete monitoring platform installed from a single ISO
  • Includes packet capture, detection rules and threat hunting
  • Indexes sessions while retaining packet data in PCAP format.
  • Needs dedicated hardware or virtual machines and setup time
  • Onion AI details are only available through sales
  • Large captures require substantial storage and careful retention settings.
Self-hosted, Operating system Self-hosted
Closed source Open source
License not stated License: Apache-2.0
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

Checked September 23, 2026

Checked September 22, 2026

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