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Cybersecurity · head to head

Tenable Nessus vs Zuora

Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite
Zuora logo

Zuora

Accounting

Subscription billing and revenue recognition for companies whose pricing is too complex for a payments platform

From
$29/month
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: Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee; Zuora pricing includes a component tied to the volume you bill, so the fee rises with your own commercial success in a way a flat platform charge does not, and the renewal conversation after a strong year is a different negotiation from the original one.
  • They diverge on capability: Tenable Nessus covers Network scanning, Zuora covers Product catalogue.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Tenable Nessus and Zuora actually diverge.

Attributes where Tenable Nessus and Zuora differ
AttributeTenable NessusZuora
Starting priceFree$29/month
Free tierYesNo
PlatformsWindows, Linux, Macos, CloudWeb, Api
CategoryCybersecurityAccounting
Founded20022007

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

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 Tenable Nessus

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

Only in Zuora

  • Product catalogue
  • Amendment engine
  • Usage rating
  • Recurring invoicing
  • Payments and collections
  • Revenue recognition
  • Quoting and CPQ
  • Multi entity and multi currency

What people use each for

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

Tenable Nessus

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

Zuora

  • A software company whose contracts routinely change mid term and whose current billing tool cannot prorate an amendment correctlynot Tenable Nessus
  • A business moving from perpetual licences to subscriptions that needs both the billing and the revenue recognition to hold up under auditnot Tenable Nessus
  • A usage based product where metered consumption has to be rated against tiers and commitments before it can be invoicednot Tenable Nessus
  • A group billing across several legal entities and currencies that has been reconciling invoices in spreadsheetsnot Tenable Nessus

Where each one falls short

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

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

Zuora

  • Pricing includes a component tied to the volume you bill, so the fee rises with your own commercial success in a way a flat platform charge does not, and the renewal conversation after a strong year is a different negotiation from the original one.
  • Implementation is a multi quarter project that normally requires a systems integrator, so the first year cost is dominated by services rather than subscription, and the internal cost of finance and engineering time on catalogue and process design is larger still.
  • Product catalogue decisions made during implementation constrain what you can price and report for years, and changing them later means reworking live subscriptions and the revenue history attached to them rather than editing a configuration.
  • It is a subsidiary system rather than the general ledger, so someone has to own the reconciliation between billing, revenue and the accounts every period, and a mapping error surfaces as an unexplained variance in the close rather than as an obvious failure.
  • Billing and revenue are separate products with separate implementations, so a company that buys billing first and adds revenue later runs a second project against data models that were not designed together in the first place.

Pricing, plan by plan

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

Zuora

$29/month
  • LaunchFree
    • Up to $100K revenue
    • Core billing
    • Basic reporting
  • ScaleFree
    • Custom pricing
    • Advanced billing
    • Revenue automation

Which should you pick?

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

Choose Zuora if

  • You need product catalogue.
  • You work on Web, Api.
  • You also want amendment engine.
Zuora review

Questions people ask

Is Tenable Nessus or Zuora better?
Neither clearly leads. Tenable Nessus starts at Free and Zuora at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Tenable Nessus or Zuora?
Tenable Nessus has a free tier; the other does not. Paid plans start at Free for Tenable Nessus and $29/month for Zuora.
Does Tenable Nessus or Zuora run on more platforms?
Tenable Nessus runs on Windows, Linux, Macos, Cloud. Zuora runs on Web, Api.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. Zuora starts at $29/month.
What is Tenable Nessus best used for?
Tenable Nessus is most often used for vulnerability scanning of servers, network devices and web applications, configuration and compliance auditing against hardening benchmarks, point in time assessments by consultants and penetration testers. Of those, vulnerability scanning of servers, network devices and web applications and configuration and compliance auditing against hardening benchmarks are not what Zuora is typically brought in for.
What can Tenable Nessus do that Zuora cannot?
Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Zuora covers Product catalogue, Amendment engine, Usage rating, Recurring invoicing.

Answered from the vendors’ own pages

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
Zuora: When is a company ready for Zuora rather than a simpler billing tool?

When the pricing model breaks the simpler tool: mid term amendments, ramps, usage tiers, multi entity billing or a revenue recognition requirement. Companies with flat monthly plans and few changes do not need it and will not enjoy paying for it.

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
Zuora: Does Zuora replace our accounting system?

No. It is a billing and revenue subledger that posts journals to your general ledger. You still need the ledger and someone owning the reconciliation between them.

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
Zuora: How long does an implementation take?

Plan in quarters. Catalogue design, order to cash process definition, data migration of existing subscriptions and ledger mapping each take real time, and the migration of live contracts is usually the hardest part.

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.

Source
Zuora: Does it calculate sales tax and VAT?

It integrates with third party tax engines rather than maintaining rates itself. Budget for that engine as a separate subscription and a separate integration.

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.

Source
Zuora: What changed when the company was taken private in 2025?

Ownership, not the product. As with any private equity owned platform, pay attention to renewal pricing behaviour and to roadmap commitments made verbally rather than contractually.

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.

Source
Zuora: Can we migrate our existing subscriptions in?

Yes, and it is the part of the project people underestimate. Every live contract has to arrive with its amendment history intact if the revenue schedules are to be right, so the migration is an accounting exercise as much as a data one.

Tenable Nessus: How frequently are Nessus plugins updated?

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

Source
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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