Corelight Zeek vs TEHTRIS NTA: side-by-side comparison (2026)

Corelight Zeek: Open source network security monitoring tool for traffic analysis. Built by Corelight.

TEHTRIS NTA: Network traffic analysis tool for real-time intrusion detection and monitoring. Built by TEHTRIS.

The table above shows where their features, integrations, deployment and company size fit differ.

Corelight Zeek is made by Corelight. TEHTRIS NTA is made by TEHTRIS. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Corelight Zeek and TEHTRIS NTA are both Network Detection and Response products, and both cover Network Monitoring. Key differences: Corelight Zeek is Free while TEHTRIS NTA is Commercial. Use the table above to see where features, deployment and company size fit differ.