Kamerka vs Nozomi Networks Nozomi Smart Polling: Side-by-Side Comparison (2026)

Kamerka

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.

Nozomi Networks Nozomi Smart Polling

Mid-market and enterprise operations teams managing OT/IoT environments where passive discovery leaves blind spots will get the most from Nozomi Networks Nozomi Smart Polling; active polling finds non-communicating devices and firmware patch status that network traffic alone cannot surface. The tool integrates directly with Guardian's passive baseline, meaning you're adding surgical interrogation to existing visibility rather than bolting on another silo. Skip this if your OT footprint is small enough that passive discovery already covers your critical assets, or if you lack the network segmentation to safely execute active polling without production risk.