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Developer Tools · head to head

CLion vs Eclipse

CLion logo

CLion

Developer Tools

A cross-platform IDE for C and C++

From
Free
Free plan
Yes
Full reviewWebsite
Eclipse logo

Eclipse

Technology

The Eclipse Foundation - home to a global community

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: CLion specific subscription pricing not listed on product page; Eclipse high memory consumption and CPU usage, especially with multiple plugins installed
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which CLion and Eclipse actually diverge.

Attributes where CLion and Eclipse differ
AttributeCLionEclipse
Pricing modelfreemiumUnknown
PlatformsWebWindows, macOS, Linux
CategoryDeveloper ToolsTechnology
FoundedUnknown2001

Identical on both: starting price (Free), free tier (Yes), 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 CLion

Nothing recorded that Eclipse does not also cover.

Only in Eclipse

  • Java development environment
  • Extensible plugin architecture
  • Integrated debugger
  • Code refactoring
  • Version control integration
  • Build automation
  • Multi-language support
  • Rich client platform

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 Eclipse
  • Embedded systems and ARM toolchain developmentnot Eclipse
  • Remote development via Docker and WSLnot Eclipse
  • Educational programming instructionnot Eclipse
  • Cross-platform development for Linux and Windowsnot Eclipse

Eclipse

  • Java application developmentnot CLion
  • Enterprise software developmentnot CLion
  • Web application developmentnot CLion
  • Plugin developmentnot CLion
  • Educational programmingnot 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

Eclipse

  • High memory consumption and CPU usage, especially with multiple plugins installed
  • Slow startup times and performance degradation with large projects or many open editors
  • Requires configuration of eclipse.ini file to optimize heap sizes for adequate performance
  • User interface considered outdated compared to modern IDE alternatives
  • User base fell from 39% of Java developers in 2024 to 28% in 2025, indicating market decline

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

Eclipse

Free

No published plan breakdown. See the Eclipse review.

Which should you pick?

Choose CLion if

  • You want to start without paying.
CLion review

Choose Eclipse if

  • You need java development environment.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want extensible plugin architecture.
Eclipse review

Questions people ask

Is CLion or Eclipse better?
Neither clearly leads. CLion starts at Free and Eclipse at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CLion or Eclipse?
CLion starts at Free and Eclipse at Free.
Does CLion or Eclipse run on more platforms?
CLion runs on Web. Eclipse runs on Windows, macOS, Linux.
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 Eclipse is typically brought in for.
What can CLion do that Eclipse cannot?
Eclipse covers Java development environment, Extensible plugin architecture, Integrated debugger, Code refactoring.

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
Eclipse: How much does Eclipse IDE cost?

Eclipse IDE is completely free and open-source, released under the Eclipse Public License 2.0.

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
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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