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.
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    Deliver secure remote access with OpenVPN.

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    OpenVPN's products provide scalable, secure remote access — giving complete freedom to your employees to work outside the office while securely accessing SaaS, the internet, and company resources.
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  • 1

    MinGW - Minimalist GNU for Windows

    A native Windows port of the GNU Compiler Collection (GCC)

    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.
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    Downloads: 5,336,475 This Week
    Last Update:
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  • 2
    JSmooth creates standard Windows executable files (.exe) that smartly launch java applications. It makes java deployment much smoother and user-friendly, as it is able to find and run Java VMs by itself, or help the user get one if none are available.
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    Downloads: 96 This Week
    Last Update:
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  • 3
    SMC - The State Machine Compiler

    SMC - The State Machine Compiler

    Translates state machine into a target programming language.

    SMC takes a state machine stored in a .sm file and generates a State pattern in 14 programming languages. Includes: default transitions, transition args, transition guards, push/pop transitions and Entry/Exit actions. See User Manual for more info.
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    Downloads: 37 This Week
    Last Update:
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  • 4
    JFlex

    JFlex

    The fast lexer generator for Java

    JFlex is a flex-like lexer generator for Java with emphasis on speed and full Unicode support. It has some not so usual features like negation in regexps and nested input streams. Also reads JLex specifications unchanged.
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    Downloads: 13 This Week
    Last Update:
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
    Learn More
  • 5
    Vector Pascal is a language targeted at SIMD multi-core instruction-sets such as the AVX and SSE2 or x86-64-v3. It has a SIMD compiler which supports parallel vector operations, loop unrolling, common sub expression removal etc. It is implemented in Java.
    Downloads: 6 This Week
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  • 6
    JavaGuard is a general purpose bytecode obfuscator, designed to fit effortlessly into your regular build and testing process, providing peace of mind that your valuable Java code is more secure against decompilation and other forms of reverse engineering
    Downloads: 2 This Week
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  • 7
    We extend the Eclipse IDE with tools for development in Haskell, a functional programming language, providing support for a wide range of tools (compilers, interpreters, doc tools etc.) in a coherent, convenient and configurable environment.
    Downloads: 1 This Week
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  • 8
    Decouple your GUI building code from the rest of your application. Using an XML description, the Java Gui Builder will build appropriate windows, controls and objects for later retrieval by the mainstream code.
    Downloads: 2 This Week
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  • 9
    GNUDE is a complete suite of GNU C, C++, Fortran, and Java Cross Compilers, and the GDB CPU Simulator and Debugger for embedded microprocessor applications development. Targets development for ARM7, ARM9, and XScale applications.
    Downloads: 1 This Week
    Last Update:
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  • No-Nonsense Code-to-Cloud Security for Devs | Aikido Icon
    No-Nonsense Code-to-Cloud Security for Devs | Aikido

    Connect your GitHub, GitLab, Bitbucket, or Azure DevOps account to start scanning your repos for free.

    Aikido provides a unified security platform for developers, combining 12 powerful scans like SAST, DAST, and CSPM. AI-driven AutoFix and AutoTriage streamline vulnerability management, while runtime protection blocks attacks.
    Start for Free
  • 10
    Java AS400 RPG source code editor, debugger, IDE.
    Downloads: 1 This Week
    Last Update:
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  • 11
    JTools provides some useful tools and utilities for Java 5.0 development. Beneath some smaller utilities we have: a (Ant like) DAO framework (also including XML Repository) and a (JSP like) general purpose template generator and execution framework.
    Downloads: 1 This Week
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  • 12
    OJ (f.a.k.a. OpenJava) is an object-oriented macro system with a compile time metaobject protocol for Java.
    Downloads: 1 This Week
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  • 13
    RECODER is a Java framework for Java program analysis and source code transformation. It computes an easy to use syntactic and semantic program model containing cross references, and it supports transformation rollbacks and incremental model updates.
    Downloads: 1 This Week
    Last Update:
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  • 14
    Introspect on running programme, view and alter object fields and methods. Edit the code of any method at runtime; apply the changes to any combination of objects, such as an array, or a complete class. Complete rewrite underway available Jan 2007.
    Downloads: 1 This Week
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  • 15
    Plugin for Eclipse aiming at fully integrating AspectJ into Eclipse.
    Downloads: 0 This Week
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  • 16
    This is the implementation of the AspectJ plugin for NetBeans 6.0 and higher.
    Downloads: 0 This Week
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  • 17
    AspectJ integration with Borland's JBuilder IDE. Developers use the AspectJ language to do aspect-oriented programming for Java projects. They can compile and run AspectJ and Java programs, and navigate and view crosscutting structure in the editor an
    Downloads: 0 This Week
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  • 18
    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
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  • 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
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  • 20
    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
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  • 21
    CPMake. Cross platform make utility
    Downloads: 0 This Week
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  • 22
    The aim of this project is to develop a set of Eclipse plugins to enable a better experience for developers programming in C/C++ for the Cell BE architecture using Eclipse.
    Downloads: 0 This Week
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  • 23
    ContractChecker is a small tool to provide support for some design by contract features to standard Java code. Internally, it is composed of an Ant task, which invokes a doclet to generate AspectJ and the AjcTask itself in order to compile it.
    Downloads: 0 This Week
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  • 24
    A framework for data-flow based program analysis, implemented as a set of Java APIs. By using this framework, researchers and developers can easily implement analyses, test their correctness, and evaluate their performance. In addition, the framework all
    Downloads: 0 This Week
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  • 25
    An architecture description language (DiaSpec) supports the description of components of a given distributed computing area. From these descriptions, DiaGen generates a dedicated programming framework to support distributed application development.
    Downloads: 0 This Week
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