Corelight Zeek vs GREYCORTEX Mendel: side-by-side comparison (2026)
Corelight Zeek is a free network detection and response solution by Corelight. GREYCORTEX Mendel is a commercial network detection and response solution by GREYCORTEX. Features, integrations, deployment and the company behind each one, side by side.
Open source network security monitoring tool for traffic analysis
Network detection and response platform for IT, IoT, and OT threat monitoring
Side-by-side comparison
Feature
Corelight Zeek
GREYCORTEX Mendel
Pricing model
Free
Commercial
Category
Network Detection and Response
Network Detection and Response
Deployment and fit
Deployment type
Hybrid
Hybrid
Company size fit
SMB, Mid-Market, Enterprise
SMB, Mid-Market, Enterprise
Company
Company
Corelight
GREYCORTEX
Use cases and capabilities
Open Source
Yes
No
Zeek
Yes
No
Network Monitoring
Yes
Yes
NDR
No
Yes
Anomaly Detection
No
Yes
IoT Security
No
Yes
SCADA
No
Yes
Flow Analysis
No
Yes
PCAP
No
Yes
Network Visibility
No
Yes
Critical Infrastructure
No
Yes
Threat Analysis
No
Yes
Core features
10 features listed
7 features listed
Integrations
1 integration listed
No integrations listed
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