Compare software

Eclipse IDE for C/C++ Developers vs CLion: catalog facts
Eclipse IDE for C/C++ Developers	CLion
Free Free and open source under the Eclipse Public License.	Freemium Free for non-commercial use. Commercial use requires a paid subscription.
Windows	Windows, macOS, Linux
C and C++ tooling bundled in one package Open source with long-running foundation governance	Understands CMake and compilation databases rather than guessing at includes Remote and embedded debugging built in
Heavier than a plain code editor The Eclipse workspace model takes some getting used to	Commercial use requires a paid subscription Indexing large C++ codebases is slow
Downloadable app	Downloadable app
Open source	Closed source
License: EPL-1.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.