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OpenJDK vs Amazon Corretto: catalog facts
OpenJDK	Amazon Corretto
Best for: Developers who need a standard JDK to build and run Java applications	Best for: Java developers and servers that need a supported, free JDK
Free Free under the GPL; Oracle also sells a commercially licensed JDK built from the same code.	Free Free, including long-term support.
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	Free long-term support from Amazon Certified Java SE compatible All 4 strengths for Amazon Corretto Free long-term support from Amazon Certified Java SE compatible Quarterly security and performance updates Several Java versions from 8 to 27
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	A JDK only; IDEs and build tools are separate Direction is set by Amazon rather than a community foundation
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0 with Classpath Exception	License: GPL-2.0-with-classpath-exception
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 Amazon Corretto aws.amazon.com/corretto Catalog checked September 24, 2026

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