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Best Zscaler IoT and OT Security Alternatives in 2026

#18 of 56 in IoT Security Software

The top Zscaler IoT and OT Security alternatives are Microsoft Defender for IoT, Tenable One OT Exposure and CrowdStrike Falcon for XIoT: 15 IoT security software our editors would look at instead of Zscaler IoT and OT Security, in our ranking order.

7.8/10Editor score
Contact Zscaler
Zscaler IoT and OT Security7.8 Contact Zscaler

Zscaler IoT and OT Security: IoT/OT discovery, segmentation, and governed remote access for cloud-focused teams. Where it falls short: cloud-only deployment may not suit teams needing other deployment models.

Switching from Zscaler IoT and OT Security? For most iot security software buyers the best Zscaler IoT and OT Security alternative is Microsoft Defender for IoT, built for organizations standardizing OT security on Microsoft.

Why People Look for a Zscaler IoT and OT Security Alternative

  • Cloud-only deployment may not suit teams needing other deployment models
  • Pricing requires contacting sales
  • Remote access is sold through Siemens

Quick Picks by What You Need

All 15 Zscaler IoT and OT Security Alternatives, Ranked

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

  1. Microsoft Defender for IoT

    Best forOrganizations standardizing OT security on Microsoft

    • Better than Zscaler IoT and OT Security:
    • Editor score 9.3 vs 7.8

    Agentless OT monitoring and threat response for organizations using Microsoft security tools.

    • Incident response
    • Industrial OT coverage
    • Threat detection
    Pricing on request Our Microsoft Defender for IoT verdict → Visit Microsoft
    9.3/10★★★★★
    Visit Microsoft
  2. Tenable One OT Exposure

    Best forTeams prioritizing OT exposure and vulnerability risk

    • Better than Zscaler IoT and OT Security:
    • Editor score 9.2 vs 7.8

    OT asset discovery, threat detection, and vulnerability management with flexible deployment options.

    • IoT asset discovery
    Pricing on request Our Tenable One OT Exposure verdict → Visit Tenable
    9.2/10★★★★★
    Visit Tenable
  3. CrowdStrike Falcon for XIoT

    Best forMid-market and enterprise IT/OT teams

    • Better than Zscaler IoT and OT Security:
    • Editor score 9.1 vs 7.8

    A cloud-based OT security offering for unified asset visibility, risk prioritization and threat protection.

    • Device segmentation
    • Incident response
    • Industrial OT coverage
    Pricing on request · 15-day trial Our CrowdStrike Falcon for XIoT verdict → Contact CrowdStrike
    9.1/10★★★★★
    Contact CrowdStrike
  4. Kaspersky Industrial CyberSecurity Platform

    Best forOn-premises teams needing broad industrial protocol coverage

    • Better than Zscaler IoT and OT Security:
    • Editor score 9.0 vs 7.8

    Broad industrial protocol monitoring and endpoint protection for on-premises OT environments.

    • IoT asset discovery
    Pricing on request Our Kaspersky Industrial CyberSecurity Platform verdict → Contact Kaspersky
    9.0/10★★★★☆
    Contact Kaspersky
  5. Dragos Platform

    Best forMid-market and enterprise OT security teams

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.9 vs 7.8

    Passive OT monitoring pairs asset visibility with threat-informed detection and response workflows.

    • IoT asset discovery
    Pricing on request Our Dragos Platform verdict → Visit Dragos
    8.9/10★★★★☆
    Visit Dragos
  6. Nozomi Networks Platform

    Best forMid-market and enterprise OT/IoT security teams

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.8 vs 7.8

    Broad OT/IoT monitoring and integrations, sold through quote-based pricing.

    • IoT asset discovery
    Pricing on request Our Nozomi Networks Platform verdict → Visit site
    8.8/10★★★★☆
    Visit site
  7. Check Point IoT Protect

    Best forIoT teams needing device controls and runtime protection

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.7 vs 7.8

    Combines IoT discovery, zero-trust controls, network defenses, and supported-device runtime protection.

    • Device segmentation
    • Industrial OT coverage
    • Threat detection
    Pricing on request Our Check Point IoT Protect verdict → Contact Check Point
    8.7/10★★★★☆
    Contact Check Point
  8. Fortinet OT Security Platform

    Best forOrganizations using Fortinet for OT protection

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.6 vs 7.8

    A Fortinet portfolio for OT visibility, segmentation, threat detection, and response.

    • Device segmentation
    • Incident response
    • Industrial OT coverage
    Pricing on request Our Fortinet OT Security Platform verdict → Contact Fortinet
    8.6/10★★★★☆
    Contact Fortinet
  9. Claroty xDome

    Best forCloud-first teams managing OT and CPS exposure

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.5 vs 7.8

    Passive OT monitoring, asset discovery, exposure management, and threat detection in a cloud platform.

    • IoT asset discovery
    Pricing on request Our Claroty xDome verdict → Visit Claroty
    8.5/10★★★★☆
    Visit Claroty
  10. Ordr Systems Control Engine

    Best forTeams needing device segmentation and response workflows

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.4 vs 7.8

    Agentless device visibility paired with segmentation policies and incident response.

    • Device segmentation
    • Incident response
    • Industrial OT coverage
    Pricing on request Our Ordr Systems Control Engine verdict → Visit Ordr
    8.4/10★★★★☆
    Visit Ordr
  11. Honeywell Cyber Insights

    Best forHoneywell sites seeking agentless OT monitoring

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.3 vs 7.8

    A self-hosted OT security tool for asset discovery, threat detection and vulnerability tracking.

    • IoT asset discovery
    Pricing on request Our Honeywell Cyber Insights verdict → Contact Honeywell
    8.3/10★★★★☆
    Contact Honeywell
  12. Claroty Continuous Threat Detection (CTD)

    Best forMid-market and enterprise OT security teams

    • Better than Zscaler IoT and OT Security:
    • Editor score 8.1 vs 7.8

    Self-hosted OT monitoring combines asset discovery, network zoning, and threat alerts.

    • Device segmentation
    • Incident response
    • Industrial OT coverage
    Pricing on request Our Claroty Continuous Threat Detection (CTD) verdict → Visit Claroty
    8.1/10★★★★☆
    Visit Claroty
  13. AWS IoT Device Defender

    Best forAWS IoT Core users focused on device security audits

    • Better than Zscaler IoT and OT Security:
    • Editor score 7.9 vs 7.8

    A focused AWS IoT security audit service, with Detect unavailable to new customers.

    • Device segmentation
    • Incident response
    • Threat detection
    Our AWS IoT Device Defender verdict → Visit AWS IoT
    7.9/10★★★★☆
    Visit AWS IoT
  14. ABB Cyber Security Asset Inventory

    Best forEnterprise teams inventorying industrial assets

    • Better than Zscaler IoT and OT Security:
    • Editor score 7.9 vs 7.8

    A focused industrial asset inventory tool, not a full threat-detection suite.

    • Incident response
    • Industrial OT coverage
    • IoT asset discovery
    Pricing on request Our ABB Cyber Security Asset Inventory verdict → Contact ABB
    7.9/10★★★★☆
    Contact ABB
  15. Industrial Defender Platform

    Best forEnterprise OT teams focused on change and compliance

    • Better than Zscaler IoT and OT Security:
    • Editor score 7.9 vs 7.8

    OT security coverage spanning asset inventory, change monitoring, threat detection and compliance.

    • Incident response
    • Industrial OT coverage
    • Threat detection
    Pricing on request Our Industrial Defender Platform verdict → Visit site
    7.9/10★★★★☆
    Visit site

Zscaler IoT and OT Security Alternatives: Common Questions

What is the best alternative to Zscaler IoT and OT Security?

Microsoft Defender for IoT: #1 in our IoT Security Software ranking, with an editor score of 9.3 out of 10. Agentless OT monitoring and threat response for organizations using Microsoft security tools.

Why do people look for Zscaler IoT and OT Security alternatives?

Cloud-only deployment may not suit teams needing other deployment models; Pricing requires contacting sales; Remote access is sold through Siemens.

How do I switch from Zscaler IoT and OT Security?

Export your data from Zscaler IoT and OT Security (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Zscaler IoT and OT Security.

How to Switch from Zscaler IoT and OT Security

  1. Export your data from Zscaler IoT and OT Security (most tools have an export in their settings).
  2. Sign up for the alternative; start on its free plan or trial if it has one.
  3. Import your export and set up the integrations your team relies on.
  4. Run both side by side for a short while, then cancel Zscaler IoT and OT Security.

Zscaler IoT and OT Security vs Each Alternative

#ToolPaid fromIoT asset discoveryIndustrial OT coverageThreat detectionIncident responseScore
18Zscaler IoT and OT SecurityYesYesYesYes7.8
1Microsoft Defender for IoTYesYesYesYes9.3
2Tenable One OT ExposureYes9.2
3CrowdStrike Falcon for XIoTYesYesYesYes9.1
4Kaspersky Industrial CyberSecurity PlatformYes9.0
5Dragos PlatformYes8.9
6Nozomi Networks PlatformYes8.8
7Check Point IoT ProtectYesYesYes8.7
8Fortinet OT Security PlatformYesYesYesYes8.6
9Claroty xDomeYes8.5
10Ordr Systems Control EngineYesYesYesYes8.4
11Honeywell Cyber InsightsYes8.3
12Claroty Continuous Threat Detection (CTD)YesYesYesYes8.1
13AWS IoT Device DefenderYesYes7.9
14ABB Cyber Security Asset InventoryYesYesYes7.9
15Industrial Defender PlatformYesYesYesYes7.9

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update