NFStream vs Cyber adAPT: 2026 Comparison
NFStream is a free network detection and response tool. Cyber adAPT is a commercial network detection and response tool by Cyber adAPT. Compare features, ratings, integrations, and community reviews side by side to find the best network detection and response fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Security teams building custom threat detection pipelines or running resource-constrained environments should evaluate NFStream for its parsing speed and framework flexibility; the 1,197 GitHub stars and active Python ecosystem indicate solid community validation for flow analysis work. This is particularly valuable for organizations that need to ingest and classify network traffic without licensing costs or vendor lock-in, though you're building detection logic yourself rather than buying pre-tuned signatures. Skip this if your team lacks Python expertise or needs out-of-the-box alerting; NFStream is a foundation, not a finished NDR product.
Mid-market and enterprise security teams drowning in false positives from signature-based NDR will see immediate relief from Cyber adAPT's behavior-based detection, which works at line speed without requiring tuning for your specific network. It covers both NIST DE.CM continuous monitoring and DE.AE adverse event analysis, meaning you get detection and initial analysis baked in without the EDR tax. Skip this if you need correlation across endpoints and network in a single pane; Cyber adAPT prioritizes what happens on the wire, not what happens on hosts.
