# ESET Server Security vs Nessus Professional: side-by-side comparison (2026)

[ESET Server Security](https://cybersectools.com/tools/eset-server-security) is a commercial [workload protection](https://cybersectools.com/categories/workload-protection) solution by [ESET](https://cybersectools.com/companies/eset). [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

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

### Use cases and capabilities

| | ESET Server Security | Nessus Professional |
|---|---|---|
| Linux | Yes | – |
| Patch Management | Yes | – |
| Ransomware Prevention | Yes | – |
| Server | Yes | – |
| Windows Security | Yes | – |
| Vulnerability | – | Yes |
| Security Scanning | – | Yes |
| CVE | – | Yes |
| Penetration Testing Framework | – | Yes |
| NIST | – | Yes |
| PCI DSS | – | Yes |
| CIS | – | Yes |
| Network Scanning | – | Yes |
| VAPT | – | Yes |

### Core features

**ESET Server Security**

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

**ESET Server Security**

5 integrations 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.

- [ESET Server Security](https://cybersectools.com/tools/eset-server-security) 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.

## ESET Server Security vs Nessus Professional FAQ

Common questions when comparing ESET Server Security vs Nessus Professional for workload protection.

### What is the difference between ESET Server Security and Nessus Professional?

**ESET Server Security**: Server security solution protecting file servers, SharePoint, and Linux systems. Built by ESET.

**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 ESET Server Security and Nessus Professional?

**ESET Server Security** is made by ESET. **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 ESET Server Security a good alternative to Nessus Professional?

In part. ESET Server Security and Nessus Professional are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [ESET Server Security vs PC Matic Server Security](https://cybersectools.com/compare/eset-server-security-vs-pc-matic-server-security)
- [ESET Server Security vs Vali Cyber ZeroLock](https://cybersectools.com/compare/eset-server-security-vs-vali-cyber-zerolock)
- [ESET Server Security vs Monarx](https://cybersectools.com/compare/eset-server-security-vs-monarx)
- [Nessus Professional vs PC Matic Server Security](https://cybersectools.com/compare/nessus-professional-vs-pc-matic-server-security)
- [Nessus Professional vs Vali Cyber ZeroLock](https://cybersectools.com/compare/nessus-professional-vs-vali-cyber-zerolock)
- [Nessus Professional vs Monarx](https://cybersectools.com/compare/monarx-vs-nessus-professional)

## Alternatives to each

- [See all ESET Server Security alternatives](https://cybersectools.com/alternatives/eset-server-security)
- [See all Nessus Professional alternatives](https://cybersectools.com/alternatives/nessus-professional)

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Source: https://cybersectools.com/compare/eset-server-security-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/eset-server-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on ESET Server Security 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