Best Nautilus OT Alternatives & Competitors in 2026

Vantelis Data Acquisition Platform

Agentless OT data acquisition platform for passive asset & traffic visibility.

OTbase Snapshot

Generates an OT asset inventory and vulnerability list as Excel/Power BI reports

SAM Intelligence

Network device & service visibility platform for ISPs using device fingerprinting.

Redinent Deep Asset Intelligence

Cloud-based IoT/OT asset intelligence engine for device profiling and OEM detection.

Dragos Platform Asset Visibility

OT asset discovery and inventory platform for industrial environments

s7scan

A tool for scanning networks, enumerating Siemens PLCs, and gathering detailed information about them.

Nozomi Networks Nozomi Smart Polling

Active polling add-on for OT/IoT asset discovery and configuration data

Armis Threat Detection and Analysis

OT/IoT asset discovery and threat detection platform for industrial environments

Athena Dynamics RAD

Remote maritime IT/OT asset discovery & vuln assessment via software agent.

Phosphorus xIoT Global Device Network

Database of 1M+ xIoT/OT/IoMT device profiles for CPS asset coverage.

SAM rAPId

API for device identification & CVE enrichment using device fingerprinting.

SecuriThings Essential Visibility

Physical security device visibility, inventory, and vulnerability mgmt platform.

Redpoint

A Digital Bond research project to enumerate ICS applications and devices

GRASSMARLIN

Passively maps and visually displays ICS/SCADA network topology for network security

Kamerka

Ultimate Internet of Things/Industrial Control Systems reconnaissance tool powered by Shodan.