Athena Dynamics RAD vs s7scan: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Athena Dynamics RAD is a commercial operational technology asset discovery tool by Athena Dynamics. s7scan is a free operational technology asset discovery tool. Compare features, ratings, integrations, and community reviews side by side to find the best operational technology asset discovery fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Mid-market and enterprise maritime operators need RAD because it discovers OT assets across hybrid IT/OT networks without requiring onboard hardware or disrupting vessel systems, a constraint that kills most traditional discovery tools in this domain. The ClassNK certification and passive scanning with 60-minute active phases prove the vendor understands maritime ops; E26 compliance support closes a real gap in the category. Skip this if your fleet runs purely air-gapped networks or if you need NIST ID.RC recovery capabilities built in; RAD prioritizes asset visibility and continuous monitoring over incident response orchestration.
Manufacturing and critical infrastructure security teams operating Siemens environments need s7scan because it's the only free tool that enumerates PLCs at scale without requiring credentials or vendor partnerships. The 150 GitHub stars reflect active adoption by OT practitioners who've validated it against real Siemens deployments. Skip this if you're looking for a commercial support contract or cross-vendor asset discovery; s7scan is laser-focused on Siemens reconnaissance and won't help you map your Rockwell or Schneider infrastructure.
