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Developer Tools · head to head

CLion vs Keil MDK

CLion logo

CLion

Developer Tools

A cross-platform IDE for C and C++

From
Free
Rated
-
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CLion specific subscription pricing not listed on product page; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where CLion and Keil MDK differ
AttributeCLionKeil MDK

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), 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 Keil MDK
  • Embedded systems and ARM toolchain developmentnot Keil MDK
  • Remote development via Docker and WSLnot Keil MDK
  • Educational programming instructionnot Keil MDK
  • Cross-platform development for Linux and Windowsnot Keil MDK

Keil MDK

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

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

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

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose CLion if

  • You want to start without paying.
CLion review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is CLion or Keil MDK better?
Neither clearly leads. CLion starts at Free and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CLion or Keil MDK?
CLion starts at Free and Keil MDK at Free.
Does CLion or Keil MDK run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use CLion for free?
Both have a free tier, so you can try either at no cost before committing.
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 Keil MDK 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
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
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
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
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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