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Developer Tools · head to head

CLion vs GNAT Pro

CLion logo

CLion

Developer Tools

A cross-platform IDE for C and C++

From
Free
Rated
-
Full reviewWebsite
GNAT Pro logo

GNAT Pro

Developer Tools

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

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only CLion has a free tier, so it costs nothing to try first.
  • Each has a real cost: CLion specific subscription pricing not listed on product page; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where CLion and GNAT Pro differ
AttributeCLionGNAT Pro
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo

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.

CLion

  • C and C++ development with real-time analysisnot GNAT Pro
  • Embedded systems and ARM toolchain developmentnot GNAT Pro
  • Remote development via Docker and WSLnot GNAT Pro
  • Educational programming instructionnot GNAT Pro
  • Cross-platform development for Linux and Windowsnot GNAT Pro

GNAT Pro

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

Where each one falls short

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

CLion

  • Specific subscription pricing not listed on product page
  • Requires reference to separate store page for tier details
  • AI credits needed for integrated AI features
  • No mention of free trial for commercial 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

Pricing, plan by plan

CLion

Free
  • Free (Non-commercial)Free
    • Non-commercial use license
    • Full IDE features for hobby and open-source projects
  • Free (Educational)Free
    • Student licenses
    • Teacher licenses
    • Full IDE access for educational purposes
  • Subscription$null/month
    • Different subscription options for individuals and organizations
    • 25% discount for switching from competing products

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose CLion if

  • You want to start without paying.
CLion review

Choose GNAT Pro if

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

GNAT Pro review

Questions people ask

Is CLion or GNAT Pro better?
Neither clearly leads. CLion starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CLion or GNAT Pro?
CLion has a free tier; the other does not. Paid plans start at Free for CLion and On request for GNAT Pro.
Does CLion or GNAT Pro run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use CLion for free?
Yes. CLion has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is CLion best used for?
CLion is most often used for c and c++ development with real-time analysis, embedded systems and arm toolchain development, remote development via docker and wsl, educational programming instruction. Of those, c and c++ development with real-time analysis and embedded systems and arm toolchain development are not what GNAT Pro is typically brought in for.

Answered from the vendors’ own pages

CLion: Is CLion free?

CLion offers free licenses for students, teachers, and non-commercial use. Commercial users can purchase subscriptions with organization pricing available.

Source
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
CLion: What free options does CLion provide?

CLion provides non-commercial use licenses for open-source and hobby projects, plus full licenses for students and teachers without cost.

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
CLion: Does CLion include AI assistance?

Yes, CLion natively integrates AI with support for Claude, GPT, Gemini, and Grok models. Users can apply JetBrains AI credits or bring their own API keys to avoid vendor lock-in.

Source
CLion: Are there discounts for switching to CLion?

CLion offers a competitive discount of 25% for users switching from other IDEs and similar products.

Source
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