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Developer Tools · head to head

Argo CD vs Tenable

Argo CD logo

Argo CD

Developer Tools

A declarative, GitOps continuous delivery tool for Kubernetes

From
Free
Free plan
Yes
Full reviewWebsite
Tenable logo

Tenable

Cybersecurity

AI-powered exposure management platform for unified security visibility

From
$3500/year
Free plan
No
Full reviewWebsite

The short version

  • Only Argo CD has a free tier, so it costs nothing to try first.
  • Each has a real cost: Argo CD licensed under Apache License 2.0 per the project's GitHub repository (argoproj/argo-cd LICENSE); as open source software it has no paid tier or vendor price to compare; Tenable pricing starts at $3500/year for Tenable One VM, expensive for small organizations
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Argo CD and Tenable actually diverge.

Attributes where Argo CD and Tenable differ
AttributeArgo CDTenable
Starting priceFree$3500/year
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsWebCloud, Web
CategoryDeveloper ToolsCybersecurity

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 Argo CD

Nothing recorded that Tenable does not also cover.

Only in Tenable

  • Unified attack surface mapping
  • Exposure intelligence enrichment
  • Tenable Hexa AI orchestration
  • Cloud Exposure (CNAPP)
  • OT Exposure
  • Identity Exposure
  • Vulnerability Management
  • Attack Surface Management

What people use each for

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

Argo CD

  • Declarative GitOps continuous deployment for Kubernetes applicationsnot Tenable
  • Automated configuration drift detection across multiple clustersnot Tenable
  • Multi-environment management with blue/green and canary deploymentsnot Tenable
  • Enterprise authentication with SSO, OIDC, OAuth2, LDAP, SAML 2.0not Tenable
  • Webhook integration for GitHub, BitBucket, and GitLab automationnot Tenable

Tenable

  • Comprehensive vulnerability scanning for enterprise networksnot Argo CD
  • Cloud security monitoring and compliance for AWS, Azure, GCPnot Argo CD
  • Identity and access management risk assessmentnot Argo CD
  • Operational technology security for industrial systemsnot Argo CD
  • Attack surface management for third-party risknot Argo CD

Where each one falls short

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

Argo CD

  • Licensed under Apache License 2.0 per the project's GitHub repository (argoproj/argo-cd LICENSE); as open source software it has no paid tier or vendor price to compare
  • The quick start installation requires the --server-side and --force-conflicts flags due to CRD size limitations, per argo-cd.readthedocs.io, a constraint the documentation states explicitly

Tenable

  • Pricing starts at $3500/year for Tenable One VM, expensive for small organizations
  • Many enterprise features require custom quote and sales engagement
  • Cloud Exposure, OT Exposure, and other modules have no published pricing
  • Multi-year contracts common, limiting flexibility
  • Setup and configuration complexity for enterprise deployments

Pricing, plan by plan

Argo CD

Free

No published plan breakdown. See the Argo CD review.

Tenable

$3500/year
  • Tenable One Vulnerability Management$3500/year
    • Per 100 assets
    • Multi-year discounts available
  • Tenable One Web App Scanning$3578/year
    • Per 5 FQDNs
    • Annual subscription
  • Nessus Professional$4790/year
    • Vulnerability scanning
    • Multi-year discounts available
    • Optional advanced support: $400/year
  • Nessus Expert$6790/year
    • Advanced vulnerability scanning
    • Multi-year discounts available
    • Optional advanced support: $400/year

Which should you pick?

Choose Argo CD if

  • You want to start without paying.
Argo CD review

Choose Tenable if

  • You need unified attack surface mapping.
  • You work on Cloud, Web.
  • You also want exposure intelligence enrichment.
Tenable review

Questions people ask

Is Argo CD or Tenable better?
Neither clearly leads. Argo CD starts at Free and Tenable at $3500/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Argo CD or Tenable?
Argo CD has a free tier; the other does not. Paid plans start at Free for Argo CD and $3500/year for Tenable.
Does Argo CD or Tenable run on more platforms?
Argo CD runs on Web. Tenable runs on Cloud, Web.
Can I use Argo CD for free?
Yes. Argo CD has a free tier, so you can try it without paying. Tenable starts at $3500/year.
What is Argo CD best used for?
Argo CD is most often used for declarative gitops continuous deployment for kubernetes applications, automated configuration drift detection across multiple clusters, multi-environment management with blue/green and canary deployments, enterprise authentication with sso, oidc, oauth2, ldap, saml 2.0. Of those, declarative gitops continuous deployment for kubernetes applications and automated configuration drift detection across multiple clusters are not what Tenable is typically brought in for.
What can Argo CD do that Tenable cannot?
Tenable covers Unified attack surface mapping, Exposure intelligence enrichment, Tenable Hexa AI orchestration, Cloud Exposure (CNAPP).

Answered from the vendors’ own pages

Argo CD: What is the cost of Argo CD?

Argo CD is open source and free to use. No licensing fees, subscription charges, or commercial restrictions apply. The project is maintained by the CNCF community.

Source
Tenable: How is Tenable One pricing structured?

Tenable One Vulnerability Management costs $3500/year per 100 assets. Web App Scanning is $3578/year per 5 FQDNs. Multi-year discounts are available.

Source
Argo CD: How frequently does Argo CD poll Git repositories by default?

Argo CD checks Git and Helm repositories every 3 minutes by default to detect configuration changes, enabling timely deployment of updates.

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

Nessus Professional costs $4790/year and provides core vulnerability scanning. Nessus Expert costs $6790/year and offers advanced scanning capabilities.

Source
Tenable: Are custom support and training available for Tenable?

Yes. Optional advanced support is available for $400/year. Training courses range from $275-$385/year.

Source
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