# Nanitor vs Nessus Professional: side-by-side comparison (2026)

[Nanitor](https://cybersectools.com/tools/nanitor) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Nanitor](https://cybersectools.com/companies/nanitor). [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). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

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

### Use cases and capabilities

| | Nanitor | Nessus Professional |
|---|---|---|
| Vulnerability | Yes | Yes |
| Vulnerability Prioritization | Yes | – |
| Configuration Management | Yes | – |
| Patch Management | Yes | – |
| Security Hardening | Yes | – |
| Security Reporting | Yes | – |
| Inventory | Yes | – |
| Security Audit | Yes | – |
| Security Scanning | – | Yes |
| CVE | – | Yes |
| Penetration Testing Framework | – | Yes |
| NIST | – | Yes |
| PCI DSS | – | Yes |
| CIS | – | Yes |
| Network Scanning | – | Yes |
| VAPT | – | Yes |

### Core features

**Nanitor**

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

**Nessus Professional**

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

### Integrations

**Nanitor**

1 integration listed. Sign in on the page to see them.

**Nessus Professional**

No integrations listed.

## Which one fits you

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

- [Nanitor](https://cybersectools.com/tools/nanitor) fits if you need both cloud and on-premises options.
- [Nessus Professional](https://cybersectools.com/tools/nessus-professional) fits if you need to run it on your own servers and you are a startup.

## Nanitor vs Nessus Professional FAQ

Common questions when comparing Nanitor vs Nessus Professional for vulnerability assessment.

### What is the difference between Nanitor and Nessus Professional?

**Nanitor**: CTEM platform for VM, security config, and patch intelligence across IT infra, built by Nanitor.

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

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

### Who makes Nanitor and Nessus Professional?

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

### Is Nanitor a good alternative to Nessus Professional?

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

## Related comparisons

- [Nanitor vs Deepwatch Vulnerability Management](https://cybersectools.com/compare/deepwatch-vulnerability-management-vs-nanitor)
- [Nanitor vs UVM: Unified Vulnerability Management](https://cybersectools.com/compare/nanitor-vs-uvm-unified-vulnerability-management)
- [Nanitor vs Tripwire IP360](https://cybersectools.com/compare/nanitor-vs-tripwire-ip360)
- [Nessus Professional vs Deepwatch Vulnerability Management](https://cybersectools.com/compare/deepwatch-vulnerability-management-vs-nessus-professional)
- [Nessus Professional vs UVM: Unified Vulnerability Management](https://cybersectools.com/compare/nessus-professional-vs-uvm-unified-vulnerability-management)
- [Nessus Professional vs Tripwire IP360](https://cybersectools.com/compare/nessus-professional-vs-tripwire-ip360)

## Alternatives to each

- [See all Nanitor alternatives](https://cybersectools.com/alternatives/nanitor)
- [See all Nessus Professional alternatives](https://cybersectools.com/alternatives/nessus-professional)

---

Source: https://cybersectools.com/compare/nanitor-vs-nessus-professional

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

More on Nanitor and Nessus Professional: 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