Softwr

Cloud · head to head

Chef vs Tenable Nessus

Chef logo

Chef

Cloud

Infrastructure automation and management

From
Free
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Chef priced per node per year, at $59 on Business and $189 on Enterprise, so cost scales with fleet size rather than with team size; 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: Chef covers Recipes, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Chef and Tenable Nessus differ
AttributeChefTenable Nessus
Pricing modelopen-sourcesubscription
PlatformsLinux, Windows, Mac, ApiWindows, Linux, Macos, Cloud
CategoryCloudCybersecurity
Founded20092002

Identical on both: starting price (Free), free tier (Yes), 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 Chef

  • Recipes
  • Cookbooks
  • Roles
  • Data bags
  • Attributes
  • Chef Server
  • Chef Infra
  • Chef Compliance

Only in Tenable Nessus

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

Both cover

  • AWS
  • Azure
  • Cloud deployment
  • Windows support

What people use each for

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

Chef

  • Configuration management and infrastructure automation across server fleetsnot Tenable Nessus
  • Enforcing compliance and audit policy on managed nodesnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

Chef

  • Priced per node per year, at $59 on Business and $189 on Enterprise, so cost scales with fleet size rather than with team size
  • Tripling the price between the two published tiers puts compliance and audit features well above basic automation
  • Enterprise Plus and every self managed deployment are custom quoted with no published 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
  • 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

Chef

Free
  • Open SourceFree
    • Chef Infra
    • Community support
    • Full functionality
  • Chef Automate$4000/year
    • Chef Infra
    • Compliance automation
    • Insights

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 Chef if

  • You need recipes.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Api.
  • You also want cookbooks.
Chef 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 Chef or Tenable Nessus better?
Neither clearly leads. Chef starts at Free and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Chef or Tenable Nessus?
Chef starts at Free and Tenable Nessus at Free.
Does Chef or Tenable Nessus run on more platforms?
Chef runs on Linux, Windows, Mac, Api. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Chef for free?
Both have a free tier, so you can try either at no cost before committing.
What is Chef best used for?
Chef is most often used for configuration management and infrastructure automation across server fleets, enforcing compliance and audit policy on managed nodes. Of those, configuration management and infrastructure automation across server fleets and enforcing compliance and audit policy on managed nodes are not what Tenable Nessus is typically brought in for.
What can Chef do that Tenable Nessus cannot?
Chef covers Recipes, Cookbooks, Roles, Data bags. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle AWS, Azure, Cloud deployment, Windows support.

Answered from the vendors’ own pages

Chef: How much does Chef cost?

Chef does not publish pricing on its website. The company offers a free trial and directs interested customers to request a demo or contact their sales team for pricing details.

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
Chef: Is there a free trial available?

Yes, Chef offers a free trial to interested users, allowing them to evaluate the platform before purchasing.

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
Chef: What deployment options are available?

Chef is available as SaaS (cloud-hosted), on-premises, and through cloud marketplaces like AWS and Azure, but specific pricing for each deployment model is not published.

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
Chef: How do I get pricing information?

Sign up for the free trial or request a demo through Chef's website to speak with their sales team about pricing.

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
Share

Related pages

More on Chef

More on Tenable Nessus

Keep looking

Other head to heads