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Eclipse IDE for Java and DSL Developers vs IntelliJ IDEA: catalog facts
Eclipse IDE for Java and DSL Developers	IntelliJ IDEA
Free Free and open source, maintained under the Eclipse Foundation.	Freemium The Community Edition is free. IntelliJ IDEA Ultimate requires a paid subscription.
Windows, macOS, Linux	Windows, macOS, Linux
Bundles Java and DSL tooling in one download Long-established project with vendor-neutral governance	Refactorings and inspections that understand the whole project, not just the file Community Edition is free and open source
Foundation homepage gives little product-specific detail Heavier than lightweight code editors	Framework support, profiler and database tools are Ultimate features Indexing a large project is slow and memory-hungry
Downloadable app	Downloadable app
Open source	Open source
License: EPL-2.0	License: Apache-2.0
No account needed	Not stated if an account is needed
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.