Browse free open source Java Compilers and projects below. Use the toggles on the left to filter open source Java Compilers by OS, license, language, programming language, and project status.

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • Go From AI Idea to AI App Fast Icon
    Go From AI Idea to AI App Fast

    One platform to build, fine-tune, and deploy ML models. No MLOps team required.

    Access Gemini 3 and 200+ models. Build chatbots, agents, or custom models with built-in monitoring and scaling.
    Try Free
  • 1
    C3PO is a software synthesis tool that provides a solution for building maintainable, reliable and robust software infrastructures and/or compiler frontends from a set of attributed grammar rules in EBNF notation.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 2
    Tool for managing patch codes for the Nintendo Wii. Formats this tool handles are common to Gecko OS and popular Wii homebrew software. This is one of very few complete cross-platform GCT compilers and the only known GCT decompiler and merge tool.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 3
    xMxmlCompiler
    xMxmlCompiler is an eclipse plugin that provides an Eclipse Builder on mxml resource changes and a GUI to the Flex 4 compiler (mxmlc) of the open SDK. It run on GNU/Linux and Windows eclipse platform version.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4
    This is an Open source compiler for Arabic C-like Syntax.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Try Free
  • 5
    Pascal Interpreter
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    A Java based interactve fiction development system. Including netbeans plugins for development and a java player.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Iterpreter of Pascal language which may help programmers doing ther job. Include basic operations in/out, declarations of variables.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Aino is a Java bytecode to PIC microcontroller family assembly language compiler written in Java.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Argus is a highly integrated Eclipse plug-in. The purpose of this plug-in is to add additional Errors and Warnings to the Eclipse Framework, assisting Java programmers to create bug free, high quality code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Forever Free Full-Stack Observability | Grafana Cloud Icon
    Forever Free Full-Stack Observability | Grafana Cloud

    Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

    Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
    Create free account
  • 10
    Plugin for Eclipse aiming at fully integrating AspectJ into Eclipse.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    This is the implementation of the AspectJ plugin for NetBeans 6.0 and higher.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    AspectJ integration with Netbeans. AspectJ enables aspect-oriented programming for Java. This module supports building AspectJ programs and navigating crosscutting structure within NetBeans and SunOne/Forte IDEs.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    This is the Aspen project - a language for high performance, scalable network services. The project consists of a compiler for the Aspen language and an associated runtime which dynamically allocates the appropriate number of threads for any workload.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Compiler for java assembly to class file. This compiler contains dead code detection and allow creating method, field and constructor from a java assembly file
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    An more efficient alternative for writing complex Asterisk dial plan files, without using the cumbersome line numbering scheme.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Asterix IDE
    Asterix IDE (Integrated Development Environment) is especially designed to provide many languages supports in one IDE. Asterix IDE offers superior support for JAVA, C/C++(mingw32-g++) and HTML developers to write, compile and run their code at one place. Asterix IDE lets you quickly and easily make program with multiple programming language support. With its constantly improving Java Editor, many rich features and an extensive range of tools are provided. An IDE is much more than a text editor. Asterix IDE offers superior support for JAVA and HTML5 developers, providing comprehensive editors and tools. Asterix IDE can be installed on all operating systems that support Java, from Windows to Linux to Mac OS systems. Write Once, Run Anywhere, is as true for Asterix IDE as it is for your own applications, because Asterix IDE itself is written in Java, too!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    AustenX

    AustenX

    A PEG based parser generator, with advanced features

    A parser generator for PEG grammars, built using Java, currently producing code for Java.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    Automaton Lexer

    A Java library for creating DFA-powered lexical analyzers

    This project is derived from the dk.brics.automaton DFA library, version 1.11-8. The most significant change is the addition of a 'info' field to automaton states, allowing them to be associated with a token type. A few automaton operations were modified to preserve the value of this field. I have not given much thought to whether it would even make sense to preserve the 'info' field through some of the other operations. This project also includes an extension of RunAutomaton, called TokenAutomaton, that can be used as a lexer, as well as its support classes and examples of its use. Lexers generated by JPlex depend on this library. I separated it from JPlex so that projects using JPlex would not depend on GPL code. Revision 1 of this project is dual-licensed, as it is the same code that was formerly part of JPlex. All code in this library was either originally published under the BSD license or was exclusively authored by me.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Netflow analyzing tools : JXColl - collector for Netflow (or XML specified) data Analyzer - front-end application for providing an user interface and output (graphs, statistics, etc.)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Model implementation for the BaSa language, a Turing-like language. This simple language is to be run in a virtual machine. The proposed language specification is defined in http://www.cs.ui.ac.id/kuliah/IKI40800/model.html
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Ball (Baisoft All-purpose List-oriented Language) is a programming language implemented completely in Java. It comes with a graphical user interface, and is very easy to use.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Barat is a front-end for Java. It parses source and byte-code, and performs name and type analysis on demand.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    BeanClipse is a NetBeans plugin for Eclipse: NetBeans runs embedded within the Eclipse platform as a plugin offering the best of both worlds to Java developers. May be just a joke ;-) .... Check also it's twin at : http://sf.net/projects/netclipse
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Beaver is a LALR compiler compiler for Java that uses several techniques to generate very fast parsers.
    Leader badge
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Berkeley Yacc is an LALR(1) parser generator. Berkeley Yacc has been made as compatible as possible with AT&T Yacc. Berkeley Yacc has been extended to generate Python, Perl and Java code.
    Downloads: 0 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB