# Nessus Professional vs Sec1 Threat Vision: side-by-side comparison (2026)

[Nessus Professional](https://cybersectools.com/tools/nessus-professional) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Tenable](https://cybersectools.com/companies/tenable). [Sec1 Threat Vision](https://cybersectools.com/tools/sec1-threat-vision) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Sec1](https://cybersectools.com/companies/sec1). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Nessus Professional | Sec1 Threat Vision |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Vulnerability Assessment | Vulnerability Assessment |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Tenable | Sec1 |
| Headquarters | – | – |

### Use cases and capabilities

| | Nessus Professional | Sec1 Threat Vision |
|---|---|---|
| Vulnerability | Yes | – |
| Security Scanning | Yes | – |
| CVE | Yes | – |
| Penetration Testing Framework | Yes | – |
| NIST | Yes | – |
| PCI DSS | Yes | – |
| CIS | Yes | – |
| Network Scanning | Yes | – |
| VAPT | Yes | – |
| Dependency Scanning | – | Yes |

### Core features

**Nessus Professional**

10 features listed. Sign in on the page to see them.

**Sec1 Threat Vision**

10 features listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Nessus Professional](https://cybersectools.com/tools/nessus-professional) fits if you need to run it on your own servers and you are a startup or a small business.
- [Sec1 Threat Vision](https://cybersectools.com/tools/sec1-threat-vision) fits if you want a cloud product.

## Nessus Professional vs Sec1 Threat Vision FAQ

Common questions when comparing Nessus Professional vs Sec1 Threat Vision for vulnerability assessment.

### What is the difference between Nessus Professional and Sec1 Threat Vision?

**Nessus Professional**: Vulnerability scanner for assessing networks, systems, and apps for security flaws. Built by Tenable.

**Sec1 Threat Vision**: AI-driven tool that predicts software package vulnerabilities 90 days ahead. Built by Sec1.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Nessus Professional and Sec1 Threat Vision?

**Nessus Professional** is made by Tenable. **Sec1 Threat Vision** is made by Sec1. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Nessus Professional a good alternative to Sec1 Threat Vision?

Often, yes. Nessus Professional and Sec1 Threat Vision are both Vulnerability Assessment products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Nessus Professional vs Webray RayScan](https://cybersectools.com/compare/nessus-professional-vs-webray-rayscan)
- [Nessus Professional vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/nessus-professional-vs-positive-technologies-xspider-pro)
- [Nessus Professional vs Tripwire IP360](https://cybersectools.com/compare/nessus-professional-vs-tripwire-ip360)
- [Sec1 Threat Vision vs Webray RayScan](https://cybersectools.com/compare/sec1-threat-vision-vs-webray-rayscan)
- [Sec1 Threat Vision vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/positive-technologies-xspider-pro-vs-sec1-threat-vision)
- [Sec1 Threat Vision vs Tripwire IP360](https://cybersectools.com/compare/sec1-threat-vision-vs-tripwire-ip360)

## Alternatives to each

- [See all Nessus Professional alternatives](https://cybersectools.com/alternatives/nessus-professional)
- [See all Sec1 Threat Vision alternatives](https://cybersectools.com/alternatives/sec1-threat-vision)

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Source: https://cybersectools.com/compare/nessus-professional-vs-sec1-threat-vision

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/nessus-professional.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Nessus Professional and Sec1 Threat Vision: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md