# Best OT Security Platforms for Web in 2026

Source: https://listme.name/best/ot-security-platforms/web

OT security products differ in how they see industrial networks, which standards they map to and whether they sell threat research or managed services. This ranking favors OT-specific depth and clear deployment options, then standards mapping. Broader exposure platforms rank lower for buyers who want an OT-only product.

## 1. Dragos (score 93.0)

OT and xOT specialist with its own threat intelligence, Managed OT Watch and incident response. The platform page gives no deployment model, so ask about sensors and hosting before comparing it with rivals.

- Best for: Operators wanting managed OT detection and response
- Contact for pricing | Web
- Website: https://www.dragos.com/
- Page: https://listme.name/software/dragos

## 2. Nozomi Networks (score 92.0)

OT and IoT visibility with Guardian sensors, a Vantage console on-prem or in the cloud, and Mandiant-powered threat intelligence. Its feature set is split across many product names, which makes scoping harder.

- Best for: Plants needing OT and IoT asset visibility
- Contact for pricing | Web, Self-hosted
- Website: https://www.nozominetworks.com/
- Page: https://listme.name/software/nozomi-networks

## 3. Claroty (score 91.0)

Passive monitoring, asset inventory and exposure management for industrial, healthcare and commercial sites, on-premise or in the cloud. Its platform page does not list IEC 62443 or NERC CIP, so confirm standards during evaluation.

- Best for: Industrial and healthcare sites needing passive discovery
- Contact for pricing | Web, Self-hosted
- Website: https://claroty.com/
- Page: https://listme.name/software/claroty

## 4. Tenable One OT Exposure (score 86.0)

Passive OT discovery and compliance mapping to IEC 62443, NERC CIP and NIST, with cloud, on-prem or hybrid deployment. It is part of a wider exposure platform, so it suits teams already using Tenable tools.

- Best for: Teams unifying OT and IT exposure management
- Contact for pricing | Web, Self-hosted
- Website: https://www.tenable.com/products/ot-security
- Page: https://listme.name/software/tenable-one-ot-exposure

## 5. Armis (score 84.0)

Passive OT and IoT monitoring offered as SaaS or on-prem, with framework mapping to IEC 62443, NIST CSF and ISO 27001. Its scope also covers IT and medical assets, so OT-only buyers should check the OT module.

- Best for: Passive OT and IoT monitoring with SaaS or on-prem choice
- Contact for pricing | Web
- Website: https://www.armis.com/
- Page: https://listme.name/software/armis

## 6. Fortinet OT Security Platform (score 83.5)

Strong for segmenting OT networks with firewalls and switch-port controls, and it suits teams already on Fortinet gear. Its OT page leads with network controls, not asset inventory, and IEC 62443-4-1 covers development only.

- Best for: Fortinet-based networks that need OT segmentation
- Contact for pricing | Web
- Website: https://www.fortinet.com/solutions/ot-security
- Page: https://listme.name/software/fortinet-ot-security

## 7. Microsoft Defender for IoT (score 81.5)

Azure-based OT and IoT monitoring with cloud, on-premises and hybrid options and a path into security operations centers. It is subscription-billed and suits teams that already run Microsoft cloud services.

- Best for: OT monitoring for teams on Microsoft Azure
- Subscription | Web, Self-hosted
- Website: https://learn.microsoft.com/en-us/azure/defender-for-iot/
- Page: https://listme.name/software/defender-for-iot

## 8. Radiflow (score 80.0)

Specialist OT threat detection and risk management for ICS and SCADA, designed for in-house SOCs and MSSPs. Its product set is narrower than the platform vendors above, and its homepage shows no prices.

- Best for: In-house SOCs and MSSPs covering ICS networks
- Contact for pricing | Web, Self-hosted
- Website: https://www.radiflow.com/
- Page: https://listme.name/software/radiflow

## 9. ORDR (score 77.0)

Device visibility across IT, IoT, OT and medical assets, with segmentation gap checks and automated response. Its scope is wider than OT alone, and the homepage lists no prices.

- Best for: Device visibility across mixed IT, IoT and OT estates
- Contact for pricing | Web
- Website: https://ordr.net/
- Page: https://listme.name/software/ordr