Corelight Zeek is a free network detection and response solution by Corelight. Telesoft FlowProbe is a commercial network detection and response solution by Telesoft Technologies. Features, integrations, deployment and the company behind each one, side by side.
Open source network security monitoring tool for traffic analysis
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Based on what each listing shows: deployment, company size, price and open source.
Corelight Zeek fits if you need both cloud and on-premises options, you are a small business and you need a free product.
Telesoft FlowProbe fits if you need to run it on your own servers.
Common questions when comparing Corelight Zeek vs Telesoft FlowProbe for network detection and response.
Corelight Zeek: Open source network security monitoring tool for traffic analysis. Built by Corelight.
Telesoft FlowProbe: Built by Telesoft Technologies.
The table above shows where their features, integrations, deployment and company size fit differ.
Corelight Zeek is made by Corelight. Telesoft FlowProbe is made by Telesoft Technologies. 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 Telesoft FlowProbe are both Network Detection and Response products, and both cover Network Monitoring. Key differences: Corelight Zeek is Free while Telesoft FlowProbe is Commercial. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-02
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