# Tenable OT Security alternatives: what AI models name instead, October 2026

IT AI Recommendation Index, October 2026 Edition. 223 of the 252 answers in the 1 category where Tenable OT Security holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://it-ai-index.com/vendors/tenable-ot-security/alternatives/

## Named instead, most often (every category and segment added)

- Claroty xDome: 44
- Microsoft Defender for IoT: 39
- Nozomi Networks Guardian: 25
- Dragos Platform: 16
- Armis Centrix: 11
- Fortinet OT Security Platform: 10

## OT and IoT security

**Small business**: 74 of 84 answers did not name Tenable OT Security (Tenable OT Security is #3 of 9 at 4%).

- Microsoft Defender for IoT: first choice in 23 of those 74
- Acreto: first choice in 4 of those 74
- Armis Centrix: first choice in 4 of those 74
- Fortinet OT Security Platform: first choice in 4 of those 74
- Nozomi Networks Guardian: first choice in 4 of those 74
- Claroty xDome: first choice in 3 of those 74
- Dragos Platform: first choice in 2 of those 74
- Forescout Vistaro Platform: first choice in 2 of those 74

**Mid-market**: 74 of 84 answers did not name Tenable OT Security (Tenable OT Security is #6 of 9 at 4%).

- Claroty xDome: first choice in 15 of those 74
- Microsoft Defender for IoT: first choice in 9 of those 74
- Dragos Platform: first choice in 6 of those 74
- Nozomi Networks Guardian: first choice in 6 of those 74
- Armis Centrix: first choice in 4 of those 74
- Fortinet OT Security Platform: first choice in 4 of those 74
- Radiflow360: first choice in 2 of those 74
- Acreto: first choice in 1 of those 74

**Enterprise**: 75 of 84 answers did not name Tenable OT Security (Tenable OT Security is #8 of 9 at 0%).

- Claroty xDome: first choice in 26 of those 75
- Nozomi Networks Guardian: first choice in 15 of those 75
- Dragos Platform: first choice in 8 of those 75
- Microsoft Defender for IoT: first choice in 7 of those 75
- Armis Centrix: first choice in 3 of those 75
- Fortinet OT Security Platform: first choice in 2 of those 75
- Check Point Quantum IoT Protect: first choice in 1 of those 75
- Cisco Cyber Vision: first choice in 1 of those 75

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.