GRASSMARLIN vs Kamerka: 2026 Comparison
GRASSMARLIN is a free operational technology asset discovery tool. Kamerka 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 available product data, here is our conclusion:
Operations teams defending critical infrastructure without dedicated ICS/SCADA visibility should start with GRASSMARLIN; its passive network mapping gives you topology sight-lines without touching production systems, which matters when downtime costs six figures per hour. The tool is free and runs on commodity hardware, so deployment friction is nearly zero for teams of any size. The tradeoff is real: GRASSMARLIN maps what exists but doesn't actively hunt for misconfigurations or lateral movement, so it's a foundation layer, not a standalone defense.
Industrial security teams without existing OT asset visibility should start with Kamerka before buying expensive discovery platforms. It's free, runs on Shodan's public internet scan data, and surfaces exposed industrial devices in minutes; 788 GitHub stars reflect active use by practitioners who actually hunt ICS/IoT risks. The major caveat: Kamerka only sees what's internet-facing, so networks properly segmented from external access won't benefit, and you'll still need manual validation and network-specific tools to understand what lives on your actual operational floors.
