Implementations

Media publications

• Alternative Java Implementations - Article by David K. Friedman and David A. Wheeler. It briefly introduces Java, provides a bit of Java history, and describes various Java implementations. (Published 2002.08.05)
• Ground work laid for Open Source Java - Sun Microsystems backed industry body, Java Community Process (JCP) oversees development of platform and language, voted to alter community structure, officially supporting OSS implementations of Java, JCP 2.5. [The Register] (Published 2002.11.28)

	Java Virtual Machine URL: http://java-virtual-machine.net/ ODP description: Introduction to the Java Virtual Machine, links to JVMs for different platforms, and collection of related articles. Page title: Java Virtual Machine - All about JVMs
	shuJIT URL: http://www.shudo.net/jit/ ODP description: JIT plugin for the Sun JVM, for Linux and FreeBSD on x86 processors. Includes support for a transparent distributed object system, MetaVM. [Open Source, GPL] Page title: shuJIT: a Java Just-in-Time Compiler for x86
	Java/Kaffe for Amiga Computers URL: http://www.ringlord.com/people/walrus/amiga/java.html ODP description: Information on getting Java (Kaffe) to run on Amiga computers. Page title: Java on the Amiga Computer Page description: Udo's Amiga-Java Page
	JDK 1.1.8 for NetBSD URL: ftp://ftp.netbsd.org/pub/NetBSD/misc/java/i386/1.1.8/ ODP description: Contains releases of the Sun JDK version 1.1.8 for the NetBSD/i386 platform. [Freeware]
	Viva URL: http://viva.sourceforge.net/ ODP description: Open source implementation of the Java runtime. Includes links to other open source resources. Page title: Viva - Open Source Java - Operation Java Freedom
	Aonix North America, Inc. URL: http://www.aonix.com/ ODP description: Provider of embedded and realtime JVMs. Provides news and articles. Page title: Aonix - The Leading Edge of Real-Time and Embedded Solutions
	Kaffe JVM URL: http://www.kaffe.org/ ODP description: Java Virtual Machine. Works on many platforms and includes Just-In-Time (JIT) support for most of them. PersonalJava 1.1 compliant (but does not fully support the Java 2 Platform). [Open Source, GPL] Page title: Kaffe.org
	GCJ URL: http://gcc.gnu.org/java/ ODP description: The GNU Compiler for Java - compiles Java source or bytecode to native machine code. Most APIs are supported, except the AWT and Swing. [Open Source, GPL] Page title: GCJ: The GNU Compiler for Java - GNU Project - Free Software Foundation (FSF)
	Kissme URL: http://kissme.sourceforge.net/ ODP description: Java VM for Unix, more so Linux. Native threads and JIT compiling. Uses GNU Classpath. [Open Source, GPL] Page title: kissme - A free Java Virtual Machine
	GNU Classpath Extensions URL: http://www.gnu.org/software/classpathx/ ODP description: A free replacement for the "javax.*" classes (core and otherwise); sibling project to GNU Classpath. [Open Source, GPL/LGPL] Page title: GNU and Java - GNU Project - Free Software Foundation (FSF)
	teaseme URL: http://teaseme.sourceforge.net/ ODP description: Java virtual machine (VM) that runs in Linux kernel, Linux kernel module JVM, based on JOS and kissme projects. [Open Source, GPL] Page title: teaseme - A JVM that runs in the linux kernel
	JC Virtual Machine URL: http://jcvm.sourceforge.net/ ODP description: A Java virtual machine implementation that converts class files into C source files using the Soot Java bytecode analysis framework, compiles them with GCC, and loads them using a built-in ELF object file loader. [Open source, LGPL] Page title: JC Virtual Machine: Home
	Jikes URL: http://jikes.sourceforge.net/ ODP description: A former IBM research virtual machine focussing on compatibility, high performance, dependency analysis, and constructive assistance. Project information, FAQ, and links. [Open Source, CPL] Page title: Jikes' Home
	GNU Classpath URL: http://www.gnu.org/software/classpath/ ODP description: A free replacement for Sun's proprietary core Java class libraries. [Open Source, GPL with exception] Page title: GNU Classpath - GNU Project - Free Software Foundation (FSF)
	JNBridge URL: http://www.jnbridge.com/ ODP description: Enabling the integration of pure Java into Microsoft .NET applications. Tools support J2SE or J2EE, allowing .NET code to access J2EE facilities including EJBs, and JNDI. SE (Standard Edition) and EE (Enterprise Edition) versions. Page title: JNBridge: Spanning Java and .NET Page description: Java .NET interoperability tools that connect anything Java with anything Microsoft .NET, in the same process or across a network.
	Open Runtime Platform URL: http://sourceforge.net/projects/orp/ ODP description: Open source research infrastructure for dynamic compiling and memory management; supports programs compiled to bytecode and linked with GNU Classpath libraries. [SourceForge, Open Source, Intel] Page title: SourceForge.net: Open Runtime Platform Page description: The world's largest development and download repository of Open Source code and applications
	IBM Developer Kit Porting URL: http://www-128.ibm.com/developerworks/java/jdk/ ODP description: Provides free developer kits for creating and testing Java applets and applications on a number of platforms, including AIX and Linux. Also other Java tools. [Freeware] Page title: developerWorks : Java™ technology Page description: The IBM Centre for Java Technology provides Java developer kit downloads that can be used to create and test Java applets and application on some of today's most popular platforms, including AIX, Linux, OS/390 and z/OS, and Windows.
	Open JVM Integration URL: http://www.mozilla.org/oji/ ODP description: Extending the Mozilla plug-in architecture to allow Java virtual machines to be plugged into Mozilla-based browser releases. [Open Source, MPL] Page title: Open JVM Integration (OJI)
	JJOS (jJOS/decaf) URL: http://sourceforge.net/projects/jjos/ ODP description: Combines the jJOS kernel and decaf virtual machine. [Open Source] Page title: SourceForge.net: JJOS (jJOS/decaf) Page description: The world's largest development and download repository of Open Source code and applications
	BeKaffe URL: http://bekaffe.sourceforge.net/ ODP description: Port of Kaffe to the BeOS platform. [Open Source, GPL]