Projects

Apache Harmony

claimed by Apache Software Foundation

Apache Harmony is the Java SE project of the Apache Software Foundation. The aim of the project is to produce a large and healthy community of those interested in runtime platforms tasked with creation of: - a compatible, independent implementation of Java SE under the Apache License v2 - a ... [More] community-developed modular runtime (VM and class library) architecture. [Less]

JamVM

JamVM is a compact Java Virtual Machine conforming to the JVM specification edition 2 (blue book). It is extremely small; stripped executable on PowerPC ~180K, Intel 150K. However, unlike other small VMs it supports the full J2SE 1.5 specification, inc. soft/weak/phantom references, annotations and JNI.

JikesRVM

Jikes RVM (Research Virtual Machine) provides a flexible open testbed to prototype virtual machine technologies and experiment with a large variety of design alternatives. The system is licensed under an OSI approved license. Jikes RVM runs on many platforms and advances the state-of-the-art of ... [More] virtual machine technologies for dynamic compilation, adaptive optimization, garbage collection, thread scheduling, and synchronization. A distinguishing characteristic of Jikes RVM is that it is implemented in the Java™ programming language and is self-hosted i.e., its Java code runs on itself without requiring a second virtual machine. Most other virtual machines for the Java platform are written in native code (typically, C or C++). A Java implementation provides ease of portability, and a seamless integration of virtual machine and application resources such as objects, threads, and operating-system interfaces. [Less]

Jato VM

Jato is an implementation of the Java virtual machine. It includes a VM and a JIT compiler for the x86 machine architecture and supports the JNI API. Jato uses Boehm GC as its garbage collector and relies on GNU Classpath to provide essential Java APIs.

Metacircular Research Platform

Welcome to the Metacircular Research Platform (MRP), a new design effort in building performant multipurpose metacircular systems. Metacircularity is a property whereby a system and its run-time are all written in the same programming language. MRP is written in Java, including libraries, compilers ... [More] , garbage collectors and binary translators. It is also a test bed for operating systems written in a metacircular manner. [Less]

SableVM

SableVM is a robust, extremely portable, efficient, and specifications-compliant Java virtual machine that aims to be easy to maintain and to extend. It features a state-of-the-art, efficient interpreter engine. Its source code is very accessible and easy to understand, and has many robustness features that have been the object of careful design.