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Cybersecurity · head to head

Idira vs Tenable Nessus

Idira logo

Idira

Cybersecurity

Built on CyberArk's legacy and powered by Palo Alto Networks

From
On request
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: Idira no pricing is published anywhere on the product page; every call to action is Request a Demo or a sales contact form; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Idira and Tenable Nessus differ
AttributeIdiraTenable Nessus
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWebWindows, Linux, Macos, Cloud
FoundedUnknown2002

Identical on both: 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 Idira

Nothing recorded that Tenable Nessus does not also cover.

Only in Tenable Nessus

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

What people use each for

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

Idira

  • Tracking all privileged account usage in manufacturing facilitiesnot Tenable Nessus
  • Securing clinical resource access across distributed healthcare practicesnot Tenable Nessus
  • Implementing managed privilege access management across government agenciesnot Tenable Nessus
  • Consolidating human, machine, and AI agent activity monitoringnot Tenable Nessus
  • Centralizing vault and secrets management across environmentsnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

Idira

  • No pricing is published anywhere on the product page; every call to action is Request a Demo or a sales contact form
  • Endpoint privilege management and agentic AI identity governance are sold as separate solution categories rather than one bundled price, so evaluating total cost requires multiple sales conversations

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

Idira

On request

No published plan breakdown. See the Idira review.

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 Idira if

Nothing in the data separates Idira from Tenable Nessus on the points above - pick on price and on how each one feels to use.

Idira 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 Idira or Tenable Nessus better?
Neither clearly leads. Idira starts at On request and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Idira or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at On request for Idira and Free for Tenable Nessus.
Does Idira or Tenable Nessus run on more platforms?
Idira runs on Web. 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. Idira starts at On request.
What is Idira best used for?
Idira is most often used for tracking all privileged account usage in manufacturing facilities, securing clinical resource access across distributed healthcare practices, implementing managed privilege access management across government agencies, consolidating human, machine, and ai agent activity monitoring. Of those, tracking all privileged account usage in manufacturing facilities and securing clinical resource access across distributed healthcare practices are not what Tenable Nessus is typically brought in for.
What can Idira do that Tenable Nessus cannot?
Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

Idira: How is Idira priced and what are the costs?

Idira pricing is not disclosed on the Palo Alto Networks website. The company directs interested organizations to request a demo or contact their sales team directly to discuss pricing and licensing options for this identity security platform.

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
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
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
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
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
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
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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