Open Source Java Interpreters

MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.

The home page for the Saxon XSLT 3.0, XQuery 3.1, and XPath 3.1 processor has moved to http://www.saxonica.com/. Information on this site is no longer kept up to date. Sourceforge was the home for open-source versions of the Saxon XSLT 3.0, XQuery 3.1, and XPath 3.1, processor from 1999 until 2022. From version 12.0 in January 2023, you need to visit the Saxonica site at http://www.saxonica.com/ for the latest information and releases.

CLIPS is a forward-chaining rule-based programming language written in C that also provides procedural and object-oriented programming facilities.

JamVM is a new Java Virtual Machine conforming to the JVM specification edition 2 (blue book). It is extremely small - stripped on PowerPC ~110K, Intel 80K. However, unlike other small VMs it supports the full spec, inc. object finalisation and JNI.

Community Z Tools Project (CZT): Tools for editing, typechecking and animating Z specifications and related notations. Includes a Java framework for building formal methods tools. NOTE: development of CZT has now moved to GitHub: https://github.com/community-z-users/czt

The PHP script engine for Java. --- Run PHP applications within any J2EE server or servlet engine and/or connect script engines like PHP with Java or .NET back ends efficiently.

Tcl/Java consists of two pieces of software. Jacl is an implementation of a Tcl interpreter written entirely in Java. Tcl Blend is a Tcl extension that provides access to Java from inside Tcl. One can prototype Java code using Tcl, and much more.

SableCC is a parser generator which generates object-oriented frameworks for building compilers, interpreters and other text parsers. SableCC keeps a clean separation between machine and user code which leads to a shorter development cycle.

Jasmin is an interpreter for the x86 assembly language with a full-featured development environment aimed for educational purposes.

Jython is a Java implementation of the Python language. It allows users to compile Python source code to Java byte codes, and run the resulting bytecodes on any Java Virtual Machine. It is the successor to JPython.

Lightweight, fast, Java-centric Lua interpreter written for JME and JSE, with string, table, package, math, io, os, debug, coroutine & luajava libraries, JSR-223 bindings, all metatags, weak tables and unique direct lua-to-java-bytecode compiling.

JPype is an effort to allow python programs full access to java class libraries. This is achieved not through re-implementing Python, as Jython/JPython has done, but rather through interfacing at the native level in both Virtual Machines. Maintenance and evolution of the project has moved! please see http://www.jpype.org for the latest version

Jason is a fully-fledged interpreter for an extended version of AgentSpeak, a BDI agent-oriented logic programming language, and is implemented in Java. Using JADE a multi-agent system can be distributed over a network effortlessly. This project was moved to https://jason-lang.github.io

An Interactive Fiction Player written for Java Virtual Machine. It implements the Z-machine and Glulx specifications and can be used either standalone or as an applet. The Z-Code/Glulx interpreter runs adventures made by Infocom and contemporary Inte

eXist-db is a native XML database featuring efficient, index-based XQuery processing, extensions for keyword search, XUpdate support, XSLT support, XForms support, REST and tight integration with existing XML development tools. Moved to Github - https://www.github.com/exist-db/exist

Un sistema de programación abierto, modular y flexible para fomentar las siguientes disciplinas: 1) programar para una interfaz, no para una implementación (GOF); 2) diseño por contrato; y 3) desarrollo dirigido por pruebas.

ESS-MODEL: The fastest and easiest to use UML reversing tool! With ESS-MODEL you can view class diagrams from your code in the time that other tools are still busy loading. Source is written in Delphi. More info: http://essmodel.sourceforge.net

NOTE: Yacas and yagy development has moved to github. The new repositories are located at https://github.com/grzegorzmazur/yacas and https://github.com/grzegorzmazur/yagy . The mailing list has been moved over to https://groups.google.com/forum/#!forum/yacas . The downloads section at sourceforge will be kept up to date for the foreseable future. Yacas is an easy to use, general purpose computer algebra system. It uses its own programming language designed for symbolic as well as arbitrary-precision numerical computations. The system comes with a library of scripts and extensive documentation. Yagy (http://sourceforge.net/p/yagy) provides full yacas experience wrapped in a simple and intuitive graphical interface.

Lua interpreter for Android written in pure Java.

Inspired by the Semantic Web, Genyris presents a new programming paradigm. Objects can belong to multiple classes independant from construction. Indentation reduces parentheses yet retains the power of Lisp. External Java libraries can be imported.

DaVinci Concurrente es un lenguaje orientado a la enseñanza de la programación estructurada para fortalecer los cimientos base de su aprendizaje, tanto en la etapa inicial de la programación secuencial como en la introducción a los conceptos básicos de la programación concurrente. Permite la visualización de la ejecución a través de una ciudad en la cual se puede controlar uno o más robots. Cada robot puede realizar diferentes acciones (por ejemplo tomar flores en la intersección que se encuentra).

Beaver is a LALR compiler compiler for Java that uses several techniques to generate very fast parsers.

Joost is a Java implementation of the Streaming Transformation for XML (STX) language (see http://stx.sourceforge.net/)

SISC is an extensible Java based interpreter of the algorithmic language Scheme. SISC uses modern interpretation techniques, and handily outperforms all existing Java interpreters (often by more than an order of magnitude).

SableVM is a clean-room, highly portable and efficient Java virtual machine. Its goals are to be reasonably small, fast, and compliant with the various specifications (JVM specification, JNI, invocation interface, etc.).