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IntelliJ IDEA vs Eclipse IDE for Java Developers: catalog facts
IntelliJ IDEA	Eclipse IDE for Java Developers
Freemium The Community Edition is free. IntelliJ IDEA Ultimate requires a paid subscription.	Free Free and open source under the Eclipse Public License.
Windows, macOS, Linux	Windows
Refactorings and inspections that understand the whole project, not just the file Community Edition is free and open source	Full Java development environment in one package Open source under foundation governance
Framework support, profiler and database tools are Ultimate features Indexing a large project is slow and memory-hungry	Heavier than lightweight code editors Foundation homepage covers many projects, so finding the IDE download takes a step
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: EPL
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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