Endian 4i vs LICSTER: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Endian 4i is a commercial industrial control system security tool by Endian. LICSTER is a free industrial control system security tool. Compare features, ratings, integrations, and community reviews side by side to find the best industrial control system security 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:
Mid-market and enterprise OT teams defending distributed industrial networks will value Endian 4i's ruggedized appliance form factor and native support for legacy protocols without requiring network redesign. The -20°C to +60°C operating range and DIN rail mounting are built for factory floors, not data centers, and the hybrid deployment option lets you start physical and shift virtual as your environment matures. Skip this if your sites run primarily IT-standard infrastructure or if you need NIST Respond capabilities; Endian 4i prioritizes continuous monitoring and resilience architecture over incident recovery workflows.
Academic security teams and ICS researchers with limited budgets should use LICSTER to build hands-on lab environments without licensing overhead; the free testbed lets you model real industrial protocols and attack chains at a fraction of what commercial simulators cost. LICSTER prioritizes fidelity in Identify and Detect functions, letting you test detection logic against authentic MODBUS and DNP3 traffic patterns. Skip it if you need operational production monitoring or vendor support; this is a sandbox for learning, not a runtime security tool.
