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Head-to-head · OT and ICS Security Monitoring Software

Armis Centrix for OT/IoT Security vs OTDefend

  • Updated Nov 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Armis Centrix for OT/IoT Security #2 in OT and ICS Security Monitoring Software 9.3/10 Pricing on request ✓ 3 of 3 features Visit Armis
OTDefend #7 in OT and ICS Security Monitoring Software 8.4/10 Pricing on request ✓ 3 of 3 features Contact OTDefend

Armis Centrix for OT/IoT Security leads on 0 checks, OTDefend on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreArmis Centrix for OT/IoT Security · 9.3/10

Armis Centrix for OT/IoT Security scores higher on our rubric for ot and ics security monitoring software: 9.3 against 8.4 out of 10; our editors rank them #2 and #7.

Armis Centrix for OT/IoT Security is the better fit for enterprise OT/IoT teams needing broad coverage. OTDefend is the better fit for air-gapped OT environments.

  • Armis Centrix for OT/IoT Security fits best

    Enterprise OT/IoT teams needing broad coverage

  • OTDefend fits best

    Air-gapped OT environments

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Side by side

Feature Armis Centrix for OT/IoT Security 9.3/10 Visit ↗ OTDefend 8.4/10 Visit ↗
At a glance
Editor score 9.3 8.4
Ranking #2 in OT and ICS Security Monitoring Software #7 in OT and ICS Security Monitoring Software
Best for Enterprise OT/IoT teams needing broad coverage Air-gapped OT environments
Pricing model Paid Paid
Starting price Pricing on request Pricing on request
Free plan Not checked yet Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Self-hosted
Platforms Web Windows
Support Email, Phone Email · 24/7
Integrations 200+ integrations 20 integrations
Built for Enterprise, Mid-market Mid-market, Enterprise
Features Armis Centrix for OT/IoT Security 3/3 · OTDefend 3/3
Passive monitoring ✓ ✓
OT asset discovery ✓ ✓
SIEM integration ✓ ✓
Specs
Deployment Not checked yet On_premises
Supported protocols S7Comm, CIP, SNMP, BACnet, Modbus, WMI, HTTP, DNP3, IEC 60870-5-104, Profinet Modbus (TCP and RTU), S7comm, DNP3, EtherNet/IP, IEC-104, IEC 61850, PROFINET, EtherCAT, POWERLINK, CC-Link IE, OPC UA, BACnet, FINS, MELSEC, HART-IP
Asset limit Not checked yet Not checked yet
Our review
Pros
  • Passive monitoring plus safe active queries for asset discovery
  • Risk prioritization, anomaly detection, and automated enforcement
  • Cloud, on-premises, and hybrid deployment with many integrations
  • Supports passive deep-packet inspection and automatic OT asset profiling
  • Maps industrial networks to topology and Purdue zones
  • Connects with SIEM, EDR, firewall, ticketing and threat-intelligence tools
Cons
  • Pricing requires contacting Armis sales
  • The platform may exceed the needs of narrowly focused teams
  • Its feature breadth can require coordination across security and IT tools
  • Pricing requires contacting sales or requesting a demo
  • Windows is the listed platform
  • Some hosts may require a Windows endpoint agent beyond network monitoring
Our verdict

Armis Centrix for OT/IoT Security is an agentless cybersecurity platform for industrial, operational technology, IoT, and cyber-physical environments. It is designed for manufacturers, utilities, transportation companies, healthcare…

Read the review →

OTDefend is an on-premises cybersecurity platform for operational technology and industrial control system environments. It is designed for industrial facilities and critical infrastructure operators across energy, manufacturing, water,…

Read the review →
  1. Armis Centrix for OT/IoT SecurityOT and ICS Security Monitoring Software 9.3Pricing on request
  2. OTDefendOT and ICS Security Monitoring Software 8.4Pricing on request

Strengths and trade-offs

  • Armis Centrix for OT/IoT Security — where it wins

    • Passive monitoring plus safe active queries for asset discovery
    • Risk prioritization, anomaly detection, and automated enforcement
    • Cloud, on-premises, and hybrid deployment with many integrations

    Where it doesn't

    • Pricing requires contacting Armis sales
    • The platform may exceed the needs of narrowly focused teams
    • Its feature breadth can require coordination across security and IT tools

  • OTDefend — where it wins

    • Supports passive deep-packet inspection and automatic OT asset profiling
    • Maps industrial networks to topology and Purdue zones
    • Connects with SIEM, EDR, firewall, ticketing and threat-intelligence tools

    Where it doesn't

    • Pricing requires contacting sales or requesting a demo
    • Windows is the listed platform
    • Some hosts may require a Windows endpoint agent beyond network monitoring
  • Armis Centrix for OT/IoT Security9.3/10 · Pricing on request

    A broad agentless platform for discovering, monitoring, and prioritizing OT/IoT risk.

    Visit ArmisFull verdict →
  • OTDefend8.4/10 · Pricing on request

    A broad on-premises OT security platform for air-gapped industrial environments.

    Contact OTDefendFull verdict →

More comparisons

All OT and ICS security monitoring software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update