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Microsoft Build of OpenJDK vs GraalVM: catalog facts
Microsoft Build of OpenJDK	GraalVM
Best for: Java developers who want a free, long-term supported JDK	Best for: Java developers building fast-starting services and small container images
Free Free of charge and open source.	Free Free to download; the source code is published in the oracle/graal repository.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Long-term supported releases at no cost Builds for macOS, Linux and Windows All 3 strengths for Microsoft Build of OpenJDK Long-term supported releases at no cost Builds for macOS, Linux and Windows Patches are upstreamed to OpenJDK by default	Native Image builds fast-starting, low-memory executables First-class support in Spring Boot, Micronaut, Helidon and Quarkus All 4 strengths for GraalVM Native Image builds fast-starting, low-memory executables First-class support in Spring Boot, Micronaut, Helidon and Quarkus Works as a drop-in JDK with existing Java tools Truffle framework for running other languages
One of many OpenJDK distributions with similar contents Support focus leans towards Microsoft's own ecosystem	Native Image compilation is slower than a normal Java build Native executables include only reachable code, so reflection-heavy code needs configuration
Downloadable app	Downloadable app
Open source	Open source
License not stated	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 Microsoft Build of OpenJDK microsoft.com/openjdk Catalog checked October 1, 2026	Official website Full listing and sources Sources for GraalVM graalvm.org Catalog checked October 1, 2026

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