# Tenable Nessus alternatives: what AI models name instead, November 2026

Gane Index, November 2026 Edition. 230 of the 252 answers in the 1 category where Tenable Nessus holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://www.gane.ai/index/it/vendors/tenable-nessus/alternatives

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

- Tenable Vulnerability Management: 73
- Intruder: 29
- Rapid7 InsightVM: 18
- Microsoft Defender Vulnerability Management: 16
- Qualys VMDR: 15
- Tenable One: 9

## Vulnerability management platforms

**Small business**: 71 of 84 answers did not name Tenable Nessus (Tenable Nessus is #7 of 12 at 6%).

- Intruder: first choice in 27 of those 71
- Microsoft Defender Vulnerability Management: first choice in 8 of those 71
- Tenable Vulnerability Management: first choice in 8 of those 71
- Defendify: first choice in 5 of those 71
- Action1: first choice in 4 of those 71
- OpenVAS: first choice in 3 of those 71
- Microsoft Defender for Cloud: first choice in 2 of those 71
- Aikido Security: first choice in 1 of those 71

**Mid-market**: 76 of 84 answers did not name Tenable Nessus (Tenable Nessus is #9 of 10 at 2%).

- Tenable Vulnerability Management: first choice in 21 of those 76
- Rapid7 InsightVM: first choice in 15 of those 76
- Qualys VMDR: first choice in 6 of those 76
- ManageEngine Vulnerability Manager Plus: first choice in 4 of those 76
- Microsoft Defender Vulnerability Management: first choice in 3 of those 76
- OpenVAS: first choice in 3 of those 76
- Action1: first choice in 2 of those 76
- Intruder: first choice in 2 of those 76

**Enterprise**: 83 of 84 answers did not name Tenable Nessus.

- Tenable Vulnerability Management: first choice in 44 of those 83
- Qualys VMDR: first choice in 9 of those 83
- Tenable One: first choice in 9 of those 83
- Microsoft Defender Vulnerability Management: first choice in 5 of those 83
- Rapid7 InsightVM: first choice in 3 of those 83
- Action1: first choice in 1 of those 83
- BitSentry: first choice in 1 of those 83
- Exposure Command: first choice in 1 of those 83

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