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Cybersecurity · head to head

Acunetix vs Keil MDK

Acunetix logo

Acunetix

Cybersecurity

Web application security testing made easy

From
On request
Free plan
No
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Keil MDK 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; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Acunetix and Keil MDK actually diverge.

Attributes where Acunetix and Keil MDK differ
AttributeAcunetixKeil MDK
Starting priceOn requestFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsDesktop, Web, ApiWeb
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 Keil MDK

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 Keil MDK
  • Testing APIs for exploitable weaknesses and threatsnot Keil MDK
  • Automating dynamic application security testing (DAST)not Keil MDK
  • Finding and validating security issues in production environmentsnot Keil MDK

Keil MDK

  • Embedded software developmentnot Acunetix
  • ARM microcontroller programmingnot Acunetix
  • Professional development environmentsnot 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

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

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

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

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 Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Acunetix or Keil MDK better?
Neither clearly leads. Acunetix starts at On request and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Acunetix or Keil MDK?
Keil MDK has a free tier; the other does not. Paid plans start at On request for Acunetix and Free for Keil MDK.
Does Acunetix or Keil MDK run on more platforms?
Acunetix runs on Desktop, Web, Api. Keil MDK runs on Web.
Can I use Keil MDK for free?
Yes. Keil MDK 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 Keil MDK is typically brought in for.
What can Acunetix do that Keil MDK 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
Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

Source
Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
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