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Suricata vs Zeek: catalog facts
Suricata	Zeek
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The software is free under its open-source licence. Hosting, hardware and external…
Linux, Command line	macOS, Linux
Supports monitoring, detection and inline prevention deployments.	Protocol analysers produce semantic logs of what happened on the network rather than raw packets, and its scripting…
Requires suitable traffic access and maintained rules.	It produces a large volume of logs that need somewhere to go, and writing custom detections means learning…
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: BSD-3-Clause
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 22, 2026	Official website Full listing and sources Checked September 22, 2026

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