Best OT and ICS Security Monitoring Software in 2026
Updated
In short: Nozomi Networks Platform is ranked #1 of 14 as of 3 October 2026, ahead of Claroty xDome and Dragos Platform. The lowest first paid tier on this page is Microsoft Defender for Business at $3/mo.
14 ot and ics security monitoring software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Deployment | |
|---|---|---|---|---|---|---|---|---|
| 1 |  Nozomi Networks Platform | 8.8 | RecognisedAPIDocumented | Free | — | — | — | View |
| 2 | Claroty xDome | 7.9 | RecognisedAPIDocumented | — | — | — | cloud | View |
| 3 |  Dragos Platform | 7.1 | RecognisedAPIDocumented | — | — | — | — | View |
| 4 |  Cisco Catalyst Center | 6.8 | RecognisedAPIDocumented | — | — | — | — | View |
| 5 |  Kaspersky Industrial CyberSecurity Platform | 6.7 | RecognisedAPIDocumented | — | — | — | on_premises | View |
| 6 | Claroty CTD | 6.5 | RecognisedAPIDocumented | — | — | — | on_premises | View |
| 7 |  OTDefend | 6.2 | RecognisedAPIDocumented | — | — | — | on_premises | View |
| 8 |  Radiflow iSID | 5.9 | RecognisedAPIDocumented | — | — | — | hybrid | View |
| 9 |  TXOne EdgeOne | 5.7 | RecognisedAPIDocumented | — | — | — | — | View |
| 10 |  EmberOT | 5.5 | RecognisedAPIDocumented | — | No | — | on_premises | View |
| 11 |  Rhebo Industrial Protector | 5.5 | RecognisedAPIDocumented | — | — | — | on_premises | View |
| 12 |  nNetNDR | 5.3 | RecognisedAPIDocumented | — | — | — | on_premises | View |
| 13 |  NetPol | 4.8 | RecognisedAPIDocumented | — | No | — | hybrid | View |
| 14 |  Microsoft Defender for Business | 4.8 | RecognisedAPIDocumented | $3/mo | — | — | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which ot and ics security monitoring software is ranked first on Inferse?
Nozomi Networks Platform is ranked #1 of 14 with a score of 8.8. Claroty xDome is second and Dragos Platform third.
How many of these have a free plan?
1 of the 14 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Microsoft Defender for Business has the lowest first paid tier we found: $3/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.