Softwr

Cybersecurity · head to head

Acunetix vs Keycloak

Acunetix logo

Acunetix

Cybersecurity

Web application security testing made easy

From
On request
Free plan
No
Full reviewWebsite
Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Keycloak has a free tier, so it costs nothing to try first.
  • Each has a real cost: Acunetix pricing available by quote only; no transparent pricing published online; Keycloak requires self-hosted deployment and operational expertise to install, configure and maintain
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Acunetix and Keycloak actually diverge.

Attributes where Acunetix and Keycloak differ
AttributeAcunetixKeycloak
Starting priceOn requestFree
Pricing modelsubscriptionopen-source
Free tierNoYes
PlatformsDesktop, Web, ApiSelf-hosted, Docker, Kubernetes, Linux, Windows, API
CategoryCybersecurityDeveloper Tools
Founded2005Unknown

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 Acunetix

  • DAST scanning
  • IAST technology
  • AcuSensor
  • JavaScript security
  • SQL injection testing
  • XSS detection
  • OWASP Top 10
  • API security testing

Only in Keycloak

Nothing recorded that Acunetix does not also cover.

What people use each for

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

Acunetix

  • Scanning web applications for security vulnerabilitiesnot Keycloak
  • Testing APIs for exploitable weaknesses and threatsnot Keycloak
  • Automating dynamic application security testing (DAST)not Keycloak
  • Finding and validating security issues in production environmentsnot Keycloak

Keycloak

  • Organisations requiring self-hosted identity infrastructure for compliance or data residencynot Acunetix
  • Companies with existing LDAP/Active Directory systems needing federated authenticationnot Acunetix
  • Open-source projects and communities requiring free IAM without licensing costsnot Acunetix
  • Enterprises building custom identity workflows requiring fine-grained authorisationnot Acunetix
  • Teams with sufficient operational expertise to manage infrastructurenot Acunetix

Where each one falls short

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

Acunetix

  • Pricing available by quote only; no transparent pricing published online
  • Requires per-application licenses for comprehensive coverage
  • Scanning speed and feature depth depend on subscription tier
  • Advanced features like API security testing may require higher-tier plans

Keycloak

  • Requires self-hosted deployment and operational expertise to install, configure and maintain
  • No managed cloud option provided by Red Hat; organisations must operate infrastructure themselves or use third-party distributions
  • Clustering and high-availability configurations require additional operational knowledge
  • Community support only; commercial support requires third-party vendors or distributions

Pricing, plan by plan

Acunetix

On request
  • StandardFree
    • Single user
    • 5 targets
    • Scheduled scans
  • PremiumFree
    • Multiple users
    • Unlimited targets
    • CI/CD integration
  • Acunetix 360Free
    • Enterprise features
    • SDLC integration
    • Custom workflows

Keycloak

Free
  • Open-sourceFree
    • Full platform functionality
    • Self-hosted deployment
    • Community support

Which should you pick?

Choose Acunetix if

  • You need dast scanning.
  • You work on Desktop, Web, Api.
  • You also want iast technology.
Acunetix review

Choose Keycloak if

  • You want to start without paying.
  • You work on Self-hosted, Docker, Kubernetes, Linux, Windows, API.
Keycloak review

Questions people ask

Is Acunetix or Keycloak better?
Neither clearly leads. Acunetix starts at On request and Keycloak at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Acunetix or Keycloak?
Keycloak has a free tier; the other does not. Paid plans start at On request for Acunetix and Free for Keycloak.
Does Acunetix or Keycloak run on more platforms?
Acunetix runs on Desktop, Web, Api. Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API.
Can I use Keycloak for free?
Yes. Keycloak has a free tier, so you can try it without paying. Acunetix starts at On request.
What is Acunetix best used for?
Acunetix is most often used for scanning web applications for security vulnerabilities, testing apis for exploitable weaknesses and threats, automating dynamic application security testing (dast), finding and validating security issues in production environments. Of those, scanning web applications for security vulnerabilities and testing apis for exploitable weaknesses and threats are not what Keycloak is typically brought in for.
What can Acunetix do that Keycloak cannot?
Acunetix covers DAST scanning, IAST technology, AcuSensor, JavaScript security.

Answered from the vendors’ own pages

Acunetix: How much does Invicti (formerly Acunetix) cost?

Invicti pricing is available by quote based on your organization's needs, application count, and required features. The platform offers 8x faster scanning compared to competitors and detects 99.98% of exploitable vulnerabilities. Contact Invicti sales for a custom pricing proposal.

Source
Keycloak: What protocols does Keycloak support?

Keycloak supports OpenID Connect, OAuth 2.0 and SAML 2.0 protocols for authentication and authorisation.

Source
Keycloak: Can Keycloak integrate with existing user directories?

Yes. Keycloak supports user federation with LDAP and Active Directory systems, allowing organisations to leverage existing user directories.

Source
Keycloak: Is Keycloak free?

Yes. Keycloak is fully open-source and free to deploy and use. No licensing fees are required.

Source
Share

Related pages

More on Acunetix

More on Keycloak

Keep looking

Other head to heads