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Language Support for Java(TM) by Red Hat vs Eclipse JDT Language Server: catalog facts
Language Support for Java(TM) by Red Hat	Eclipse JDT Language Server
Free Free to install from the Visual Studio Marketplace.	Free Free and open source under the Eclipse Public License 2.0.
Windows, macOS, Linux	Windows, macOS, Linux
Code completion, linting, formatting and refactoring for Java Maven and Gradle projects recognised automatically	Java IDE features in any LSP-capable editor Backed by the Eclipse JDT compiler tooling
Only works inside Visual Studio Code Other platforms need a separately installed JDK 25 or newer	Needs an editor with LSP support to be useful Setup in some editors takes manual configuration
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: EPL-2.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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