Apache Harmony

Apache Harmony is the Java SE project of the Apache Software Foundation. Please help us make this a world class, certified implementation of the Java Platform Standard Edition!

Apache Harmonys aim is to produce a large and healthy community of those interested in runtime platforms tasked with creation of :

A compatible, independent implementation of the Java SE 5 JDK under the Apache License v2.
A community-developed modular runtime (VM and class library) architecture.

We aim to support wide range of different platforms. The main criteria for whether a particular platform is supported or not is the involvement of people in running tests on regular base, reporting build status, finding and fixing bugs for that platform, and so on. We have a list of platforms we are actively maintaining at the moment.

Project Status

JRE and HDK snapshots available
JRE can run popular programs like Apache Tomcat, Eclipse, Maven, Derby, Ant
More than 95% of Java 5 API complete. (not compatible, just completed)
More than 1.25 Million Lines of Code