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OpenJDK vs Eclipse Temurin: catalog facts
OpenJDK	Eclipse Temurin
Best for: Developers who need a standard JDK to build and run Java applications	Best for: Developers and servers that need a free, certified Java runtime
Free Free under the GPL; Oracle also sells a commercially licensed JDK built from the same code.	Free Free to download and use with no licensing fees.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Reference implementation of the Java Platform Free production-ready builds for three desktop platforms All 3 strengths for OpenJDK Reference implementation of the Java Platform Free production-ready builds for three desktop platforms Open development with public source and proposals	Java SE TCK certified OpenJDK builds Built from open-source scripts and infrastructure All 3 strengths for Eclipse Temurin Java SE TCK certified OpenJDK builds Built from open-source scripts and infrastructure No licensing fees for production use
Oracle's OpenJDK builds are only updated for a short time per release Older versions such as JDK 17 need builds from other vendors for updates	Provides the runtime and JDK only, not an IDE or build tools
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0 with Classpath Exception	License: GPL-2.0 WITH Classpath-exception-2.0
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for OpenJDK openjdk.org Catalog checked October 1, 2026	Official website Full listing and sources Sources for Eclipse Temurin adoptium.net Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.