For Java 12 onwards, official General-Availability (GA) and Early-Access (EA) Windows 64-bit builds of the OpenJDK (GPL2 + Classpath Exception) from Oracle are available as tar.gz/zip from the JDK website.
If you prefer an installer, there are several distributions. There is a public Google Doc and Blog post by the Java Champions community which lists the best-supported OpenJDK distributions. Currently, these are:
- AdoptOpenJDK, which also has a version with OpenJ9 instead of Hotspot as its VM (backed by IBM and jClarity)
- Amazon Corretto
- Liberica from Bellsoft
- Red Hat OpenJDK
- SAPMachine (backed by SAP)
- Zulu Community (backed by Azul Systems)
