BeKaffe
Provides screenshots, downloadable releases and notes, FAQs and other related documents on the project.
Classpath Extensions
Presents the GNU classpath extensions project that creates free editions of the extension libraries in Java.
GNU Classpath
Recounts updated information about the project’s versions that are available for downloading. Includes release notes, answers to frequently asked questions, and success stories.
Java Virtual Machine
Provides information about the foundation of the Java platforms called the JVM. With FAQs, updates associated news and downloadable versions of its software.
JC Virtual Machine
Implementation of the JVM that is able to convert class files into C source files with its list of features and other related documents.
Jikes
Presents the Java-based compiler that transforms source files in the Java programming language. With FAQs, downloads, and viewable bugs.
JN Bridge
Features the latest product called JNBridge Pro with discussions on its performance and interoperability. Comprises of white papers, demos, case studies, and examples for added information.
Kaffe
Defines the implementation of the JVM with downloadable release versions. Contains answers to several frequently asked questions, list of ports and projects, and a gallery of screenshots.
Open Run-time Platform
Contains downloadable files for the ORP open-source implementation. Each file includes a release note.
SourceForge: JJOS
Offers a free downloadable open Java-based operating system that merges jJOS kernel and decaf VM.