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Developer Tools · head to head

GNAT Pro vs SonarQube

GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Rated
-
Full reviewWebsite
SonarQube logo

SonarQube

Developer Tools

Code quality and code security for clean code, at every step

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only SonarQube has a free tier, so it costs nothing to try first.
  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; SonarQube advanced Security add-on uses custom pricing
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which GNAT Pro and SonarQube actually diverge.

Attributes where GNAT Pro and SonarQube differ
AttributeGNAT ProSonarQube
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes

Identical on both: platforms (Web), user rating (Not yet rated), category (Developer Tools).

What people use each for

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

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot SonarQube
  • Developing automotive embedded systems with ISO-26262 compliancenot SonarQube
  • Integrating Ada, C/C++, and Rust components in single codebasenot SonarQube
  • Managing software supply chain vulnerabilities and SBOMsnot SonarQube
  • Supporting long-lived software systems spanning decadesnot SonarQube

SonarQube

  • Code quality analysisnot GNAT Pro
  • Vulnerability detectionnot GNAT Pro
  • Security scanningnot GNAT Pro
  • Compliance reportingnot GNAT Pro

Where each one falls short

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

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

SonarQube

  • Advanced Security add-on uses custom pricing
  • Only private project lines of code count toward limits

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

SonarQube

Free
  • FreeFree
    • Supports up to 50000 lines of code in private projects
    • Never expires
    • Covers public projects
  • Team$34/month
    • 30+ languages
    • Code quality standards
    • Bug and vulnerability detection
  • Enterprise$null/custom
    • Advanced security reports
    • OWASP/CWE/PCI DSS compliance
    • Unlimited users and projects

Which should you pick?

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from SonarQube on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Choose SonarQube if

  • You want to start without paying.
SonarQube review

Questions people ask

Is GNAT Pro or SonarQube better?
Neither clearly leads. GNAT Pro starts at On request and SonarQube at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or SonarQube?
SonarQube has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for SonarQube.
Does GNAT Pro or SonarQube run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use SonarQube for free?
Yes. SonarQube has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is GNAT Pro best used for?
GNAT Pro is most often used for building certified avionics software meeting do-178b/c standards, developing automotive embedded systems with iso-26262 compliance, integrating ada, c/c++, and rust components in single codebase, managing software supply chain vulnerabilities and sboms. Of those, building certified avionics software meeting do-178b/c standards and developing automotive embedded systems with iso-26262 compliance are not what SonarQube is typically brought in for.

Answered from the vendors’ own pages

GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
SonarQube: How much does SonarQube cost?

SonarQube offers a free tier supporting up to 50000 lines of code in private projects, a Team plan starting at $34/month, and custom Enterprise pricing. Team plan includes 14-day free trial.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
SonarQube: Is SonarQube free?

Yes, SonarQube offers a free tier that never expires and covers both public and private projects up to 50000 lines of code in private projects.

Source
SonarQube: What languages does SonarQube support?

SonarQube Team plan supports 30+ languages including common programming languages. Enterprise plan adds support for 40+ languages including ABAP, COBOL, and Apex.

Source
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