Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with long-term support that will include performance enhancements and security fixes. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard. With Corretto, you can develop and run Java applications on popular operating systems, including Linux, Windows, and macOS.
$ sdk install java x.y.z-amzn
$ sdk install java x.y.z-grl
Liberica is a 100% open-source Java implementation. It is built from OpenJDK which BellSoft contributes to, is thoroughly tested and passed the JCK provided under the license from OpenJDK. All supported versions of Liberica also contain JavaFX 12.
$ sdk install java x.y.z-librca
AdoptOpenJDK.net started in 2017 following years of discussions about the general lack of an open and reproducible build and test system for OpenJDK source across multiple platforms. AdoptOpenJDK provides rock-solid OpenJDK binaries for the Java ecosystem and also provides infrastructure as code, and a Build farm for builders of OpenJDK, on any platform.
$ sdk install java x.y.z-adpt
OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). It is the result of an effort Sun Microsystems began in 2006. The implementation is licensed under the GNU General Public License (GNU GPL) version 2 with a linking exception. Were it not for the GPL linking exception, components that linked to the Java class library would be subject to the terms of the GPL license. OpenJDK is the official reference implementation of Java SE since version 7.
$ sdk install java x.y.z-open
SAP SE is a German multinational software corporation that makes enterprise software to manage business operations and customer relations. SAP is headquartered in Walldorf, Baden-Württemberg, Germany with regional offices in 180 countries. SapMachine is a downstream version of the OpenJDK project. It is used to build and maintain a SAP supported version of OpenJDK for SAP customers and partners who wish to use OpenJDK to run their applications. SAP is committed to ensuring the continued success of the Java platform.
$ sdk install java x.y.z-sapmchn
Azul Systems serves companies who need to deliver server-based Java applications for their web-facing customers (travel, online retail, gaming, SaaS), meet specific latency targets for real-time business systems (advertising networks, capital markets, communications) ensure timely maintenance or security updates for essential applications, or deliver Java-based systems for embedded and IoT use cases.
$ sdk install java x.y.z-zulu