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Cybersecurity · head to head

ESET NOD32 Antivirus vs Tenable Nessus

ESET NOD32 Antivirus logo

ESET NOD32 Antivirus

Cybersecurity

Essential antivirus protection

From
$39.99/year
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tenable Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: ESET NOD32 Antivirus the advertised price applies to the first term only, and renewal reverts to the official list price; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: ESET NOD32 Antivirus covers Antivirus & Antispyware, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which ESET NOD32 Antivirus and Tenable Nessus actually diverge.

Attributes where ESET NOD32 Antivirus and Tenable Nessus differ
AttributeESET NOD32 AntivirusTenable Nessus
Starting price$39.99/yearFree
Free tierNoYes
PlatformsDesktopWindows, Linux, Macos, Cloud
Founded19922002

Identical on both: pricing model (subscription), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ESET NOD32 Antivirus

  • Antivirus & Antispyware
  • Exploit Blocker
  • Advanced Machine Learning
  • Anti-Phishing
  • UEFI Scanner
  • Script-Based Attack Protection
  • Ransomware Shield
  • Gamer Mode

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

Both cover

  • Cloud deployment

What people use each for

The jobs each tool is most often brought in to do.

ESET NOD32 Antivirus

  • Antivirus and anti malware protection for home Windows, macOS and Android devicesnot Tenable Nessus
  • Blocking phishing and ransomware on personal computersnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot ESET NOD32 Antivirus
  • Configuration and compliance auditing against hardening benchmarksnot ESET NOD32 Antivirus
  • Point in time assessments by consultants and penetration testersnot ESET NOD32 Antivirus

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ESET NOD32 Antivirus

  • The advertised price applies to the first term only, and renewal reverts to the official list price
  • Any saving shown is the difference between the introductory price and that list price rather than an ongoing discount
  • Device coverage is chosen at purchase and priced accordingly, so protecting another machine means changing the licence

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

ESET NOD32 Antivirus

$39.99/year
  • NOD32 Antivirus$39.99/year
    • 1 Device
    • Antivirus & Antispyware
    • Anti-Phishing
  • Internet Security$49.99/year
    • 1 Device
    • All NOD32 features
    • Firewall
  • Smart Security Premium$59.99/year
    • 1 Device
    • All Internet Security features
    • Password Manager

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose ESET NOD32 Antivirus if

  • You need antivirus & antispyware.
  • You work on Desktop.
  • You also want exploit blocker.
ESET NOD32 Antivirus review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is ESET NOD32 Antivirus or Tenable Nessus better?
Neither clearly leads. ESET NOD32 Antivirus starts at $39.99/year and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESET NOD32 Antivirus or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at $39.99/year for ESET NOD32 Antivirus and Free for Tenable Nessus.
Does ESET NOD32 Antivirus or Tenable Nessus run on more platforms?
ESET NOD32 Antivirus runs on Desktop. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. ESET NOD32 Antivirus starts at $39.99/year.
What is ESET NOD32 Antivirus best used for?
ESET NOD32 Antivirus is most often used for antivirus and anti malware protection for home windows, macos and android devices, blocking phishing and ransomware on personal computers. Of those, antivirus and anti malware protection for home windows, macos and android devices and blocking phishing and ransomware on personal computers are not what Tenable Nessus is typically brought in for.
What can ESET NOD32 Antivirus do that Tenable Nessus cannot?
ESET NOD32 Antivirus covers Antivirus & Antispyware, Exploit Blocker, Advanced Machine Learning, Anti-Phishing. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle Cloud deployment.

Answered from the vendors’ own pages

ESET NOD32 Antivirus: Does ESET offer a free trial, and what do I get access to?

ESET offers a free 30-day trial with no credit card required. The trial includes full access to all features in the tier you choose before you commit to a paid subscription.

Source
Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
ESET NOD32 Antivirus: What subscription contract lengths are available?

ESET offers subscription terms ranging from 1 to 10 years depending on the tier. Home Security Essential and Premium plans support 1-10 years, while Ultimate requires 5-10 years. Business plans also support multi-year terms.

Source
Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
ESET NOD32 Antivirus: Will my renewal price change after the first year?

ESET states that the advertised price is valid for the first term only. They send advance notification via email before renewal price increases occur, allowing you to decide whether to continue.

Source
Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
ESET NOD32 Antivirus: How many devices can I protect on a single subscription?

You can customize the number of protected devices from 1-10 on most plans. Premium and Ultimate tiers include VPN access that varies by device count: Essential/Premium include 3-5 VPN devices, while Ultimate covers 10-25 VPN devices depending on total plan size.

Source
Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

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ESET NOD32 Antivirus: Is there an extra charge to protect Android devices?

Android protection is available as an optional add-on at $5 per year per device, in addition to your main subscription cost.

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Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

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Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

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Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

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Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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