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Developer Tools · head to head

Harness vs Nessus

Harness logo

Harness

Developer Tools

Software delivery platform across CI, CD, security testing and cost management

From
Free
Free plan
Yes
Full reviewWebsite
Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Free plan
No
Full reviewWebsite

The short version

  • Only Harness has a free tier, so it costs nothing to try first.
  • Each has a real cost: Harness essentials and Enterprise pricing requires sales contact; no published rates; Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Harness and Nessus actually diverge.

Attributes where Harness and Nessus differ
AttributeHarnessNessus
Starting priceFree$4790/year
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebDesktop, Api
CategoryDeveloper ToolsCybersecurity
FoundedUnknown2002

Identical on both: 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 Harness

Nothing recorded that Nessus does not also cover.

Only in Nessus

  • Vulnerability scanning
  • Configuration auditing
  • Malware detection
  • Web application scanning
  • Cloud scanning
  • Compliance checks
  • Patch auditing
  • Pre-built policies

What people use each for

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

Harness

  • Deploying apps to AWS, Azure, and Google Cloud with rollbacksnot Nessus
  • Integrating security scanners throughout build pipelines before productionnot Nessus
  • Automating cloud cost reduction and tracking unit-level expensesnot Nessus
  • Enabling developers to provision infrastructure without operations bottlenecksnot Nessus
  • Assessing deployment frequency and lead time productivity metricsnot Nessus

Nessus

  • Vulnerability scanning for individual practitionersnot Harness
  • Enterprise vulnerability managementnot Harness
  • Web application security assessmentsnot Harness

Where each one falls short

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

Harness

  • Essentials and Enterprise pricing requires sales contact; no published rates
  • DevOps Essentials has no on-premises deployment option
  • Internal Developer Portal requires minimum 20 developer licenses
  • Pipeline execution history retention 6 months (Essentials) vs 25 months as add-on (Enterprise)

Nessus

  • Nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Multi year terms are the only discount route, at $9,330.95 for two years and $13,637.54 for three
  • It is a single user scanner, so team workflows mean migrating to another Tenable product
  • Tenable One vulnerability management is priced separately, starting at $3,500 a year for 100 assets

Pricing, plan by plan

Harness

Free
  • FreeFree
    • Starter platform for software delivery lifecycle
    • Open source options available (Harness Open Source, Litmus Chaos)
  • Essentials$null/month
    • Growing organizations with small to mid-size teams
    • Packaged DevOps Essentials bundle
    • Continuous software delivery capabilities
  • Enterprise$null/month
    • Large-scale organizations
    • Pick any modules based on needs
    • Advanced features

Nessus

$4790/year
  • Nessus Professional$4790/year
    • 1 year license
    • Best for individual security professionals
  • Nessus Professional 2-Year$9330.95/2 years
    • 2 year license with discounted rate vs. annual
  • Nessus Professional 3-Year$13637.54/3 years
    • 3 year license with discounted rate vs. annual
  • Nessus Expert$6790/year
    • 1 year license
    • Enhanced capabilities vs. Professional

Which should you pick?

Choose Harness if

  • You want to start without paying.
Harness review

Choose Nessus if

  • You need vulnerability scanning.
  • You work on Desktop, Api.
  • You also want configuration auditing.
Nessus review

Questions people ask

Is Harness or Nessus better?
Neither clearly leads. Harness starts at Free and Nessus at $4790/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Harness or Nessus?
Harness has a free tier; the other does not. Paid plans start at Free for Harness and $4790/year for Nessus.
Does Harness or Nessus run on more platforms?
Harness runs on Web. Nessus runs on Desktop, Api.
Can I use Harness for free?
Yes. Harness has a free tier, so you can try it without paying. Nessus starts at $4790/year.
What is Harness best used for?
Harness is most often used for deploying apps to aws, azure, and google cloud with rollbacks, integrating security scanners throughout build pipelines before production, automating cloud cost reduction and tracking unit-level expenses, enabling developers to provision infrastructure without operations bottlenecks. Of those, deploying apps to aws, azure, and google cloud with rollbacks and integrating security scanners throughout build pipelines before production are not what Nessus is typically brought in for.
What can Harness do that Nessus cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning.

Answered from the vendors’ own pages

Harness: Is there a free Harness plan?

Yes, Harness offers a free plan for individual developers and small teams with open source options including Harness Open Source and Litmus Chaos.

Source
Nessus: What is the cheapest Nessus option?

Nessus Professional starts at $4,790 per year for a 1-year license. Multi-year commitments offer discounts, with 2-year licenses at $9,330.95 and 3-year licenses at $13,637.54.

Source
Harness: What are Harness's paid pricing tiers?

Harness offers Essentials for growing teams and Enterprise for large-scale organizations. Both require contacting sales for custom pricing. Pricing is based on modules and features selected.

Source
Nessus: What is the difference between Nessus Professional and Expert?

Nessus Expert costs $6,790 per year for a 1-year license (compared to $4,790 for Professional) and includes enhanced capabilities. Multi-year rates are available at discounted prices.

Source
Harness: Can Harness be deployed on-premises?

Enterprise plans include self-managed platform deployment option. DevOps Essentials bundle does not offer on-premises deployment.

Source
Nessus: Does Nessus offer optional support or training?

Yes, Nessus offers add-on services: Advanced Support at $400/year provides 24x365 access to phone, email, community, and chat support. On-Demand Training costs $275/year for Fundamentals course access or $385/year for both Fundamentals and Advanced courses.

Source
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