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Cybersecurity · head to head

Nessus vs Puppet

Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite
Puppet logo

Puppet

Cloud

Infrastructure automation for enterprises

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Puppet has a free tier, so it costs nothing to try first.
  • Each has a real cost: Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier; Puppet no pricing published for commercial tiers; requires contacting sales
  • They diverge on capability: Nessus covers Vulnerability scanning, Puppet covers Manifests.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Nessus and Puppet actually diverge.

Attributes where Nessus and Puppet differ
AttributeNessusPuppet
Starting price$4790/yearFree
Pricing modelsubscriptionquote
Free tierNoYes
PlatformsDesktop, ApiLinux, Windows, Mac, Api
CategoryCybersecurityCloud
Founded20022005

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 Nessus

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

Only in Puppet

  • Manifests
  • Modules
  • Classes
  • Variables
  • Facts
  • Puppet Master
  • Hiera
  • Facter

Both cover

  • AWS
  • Azure
  • On-premise deployment
  • Cloud deployment

What people use each for

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

Nessus

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

Puppet

  • Infrastructure automationnot Nessus
  • Configuration managementnot Nessus
  • DevOps at scalenot Nessus
  • Enterprise infrastructurenot Nessus

Where each one falls short

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

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

Puppet

  • No pricing published for commercial tiers; requires contacting sales
  • Enterprise and Advanced tiers require custom quote
  • Free tier limited to 25 nodes maximum

Pricing, plan by plan

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

Puppet

Free
  • DeveloperFree
    • Up to 25 nodes
  • Core Commercial$null/custom
    • 25+ nodes
    • Vendor-backed SLAs
    • Training with Certified Engineers
  • Enterprise$null/custom
    • Web GUI
    • RBAC
    • Multi-environment support
  • Advanced$null/custom
    • AI-powered features
    • Advanced patching
    • Vulnerability remediation

Which should you pick?

Choose Nessus if

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

Choose Puppet if

  • You need manifests.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Api.
  • You also want modules.
Puppet review

Questions people ask

Is Nessus or Puppet better?
Neither clearly leads. Nessus starts at $4790/year and Puppet at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nessus or Puppet?
Puppet has a free tier; the other does not. Paid plans start at $4790/year for Nessus and Free for Puppet.
Does Nessus or Puppet run on more platforms?
Nessus runs on Desktop, Api. Puppet runs on Linux, Windows, Mac, Api.
Can I use Puppet for free?
Yes. Puppet has a free tier, so you can try it without paying. Nessus starts at $4790/year.
What is Nessus best used for?
Nessus is most often used for vulnerability scanning for individual practitioners, enterprise vulnerability management, web application security assessments. Of those, vulnerability scanning for individual practitioners and enterprise vulnerability management are not what Puppet is typically brought in for.
What can Nessus do that Puppet cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning. Puppet covers Manifests, Modules, Classes, Variables. Both handle AWS, Azure, On-premise deployment, Cloud deployment.

Answered from the vendors’ own pages

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
Puppet: How much does Puppet cost?

Puppet's Developer tier is free for up to 25 nodes. Commercial, Enterprise, and Advanced tiers require contacting their sales team for a custom quote.

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
Puppet: Is there a free version of Puppet?

Yes, Puppet's Developer tier is free forever for up to 25 nodes of infrastructure.

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
Puppet: What does the Enterprise tier include?

Puppet's Enterprise tier includes web GUI, RBAC, and multi-environment support for organizations managing infrastructure at scale, with pricing available upon request.

Source
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