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.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 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
  • 1
    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: 0 This Week
    Last Update:
    See Project
  • 2
    GOTO-20 is a basicode-2 to java Bytecode compiler.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    The Generic Analyzer is a framework in Java that is designed to allow users to build, quickly and easily, compilers and interpreters without the need to implement all the complex steps of a translator.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    Compiler optimization for code that AI generates, reuses similar substrings of code to exponentially reduce the Big-O of compile. At runtime, CodeTree objects breed, rename vars, mutate code and run it instantly. For any realtime compilable language.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build, govern, and optimize agents and models with Gemini Enterprise Agent Platform.
    Start Free
  • 5
    All APIs that help build prof of concepts of frameworks : bytecode, java, xml models analysis, querying and generation, using high level of abstraction.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Graal Profiling Data Viewer
    Graal collects profiling information when interpreting Java Bytecode. This tool gives the user the ability to inspect these Graal internal datastructures easily. Installation instructions are provided in the wiki.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    GraphQL Manifold

    GraphQL Manifold

    Manifold is a Java compiler plugin, features include Metaprogramming

    Manifold is a Java compiler plugin. It supplements Java with direct, type-safe access to GraphQL, JSON & JSON Schema, YAML, XML, CSV, JavaScript, etc. All fully supported in JDK LTS releases 8 - 19 + latest with comprehensive IDE support in IntelliJ IDEA and Android Studio. Manifold consists of a set of modules, one for each feature. Simply add the Manifold dependencies of your choosing to your existing project and begin taking advantage of them. Favor composition over inheritance. Use @link and @part for automatic interface implementation forwarding and delegation. Use the framework to gain direct, type-safe access to any type of resource, such as GraphQL, JSON, XML, YAML, CSV, and even other languages such as JavaScript. Remove the code gen step in your build process. Use types defined in .graphql files directly, no code gen steps! Make GraphQL changes and immediately use them with code completion.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    HATE

    HATE

    HATE's an ASN.1 Text Editor.

    HATE's an ASN.1 Text Editor written in Java. It is designed to be easy to use, highly customizable and flexible.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Hades aims to become the reference open source environment for developing, validating and deploying PLUTO (Procedure Language for Users in Test and Operations) procedures.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Stop Cyber Threats with VM-Series Next-Gen Firewall on Azure Icon
    Stop Cyber Threats with VM-Series Next-Gen Firewall on Azure

    Native application identity and user-based security for your Azure cloud

    Gain integrated visibility across all traffic in a single pass. Deploy Palo Alto Networks VM-Series to determine application identity and content while automating security policy updates via rich APIs.
    Get a free trial
  • 10
    Haggler supports the definition, documentation, and implementation of class invariants and method pre-conditions and post-conditions through Java5 annotations.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Hali-sy is a Meta project that is aimed at fully supporting the Arabic language for most popular open-source projects
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Tho goal of this project is to provide an integrated development environment for developing (x)Harbour applications on various platforms.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    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: 0 This Week
    Last Update:
    See Project
  • 14
    HiLexed 2 is a dynamic hierarchical LL-parser system with integrated lexing. It features a powerful unlimited look-ahead, look-ahead compression*, dynamic rules and left-recursion*. * = Under development
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Hipo is a hypothetical computer to facilitate the learning of machine language. The student can use hipo to develop simple programs and understand the internal logic of a computer. There is a plan to implement Donald Knuth's MMIX machine language, also.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    I-Java is an extension of Java for implementing "incomplete objects" and "object composition". I-Java implements a preprocessor that produces standard Java code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Java implementation for the IC (Irish Coffee) language.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    The illegitimate child of a free-spirited comedian and a profiteering barista; a batteries included approach to compiled languages.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Invicta is a build management tool. Using simple project definition files, it generates powerful build scripts (such as ANT) while hiding their complexity. Invicta is a modular framework that allows developing additional components and output types.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    IvmaiAsn ASN1/ECN/XDR Tools. A collection of the ASN.1/ECN parser, XDR-to-ASN.1 converter and pretty-printer scripts for ASN.1/ECN specifications. Contains also a formal definition of the ASN.1 built-in types, ECN encoding classes and XDR encodings.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    To some, the Java and C++ languages appear deceptively similar. The goal of this is project is to examine these two popular object-oriented languages and generate a Java to C++ translator.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    J2c is the J2 language compiler, a superset of the Java language. The compiler can produce code for the Java and .NET platforms.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    JAC (Java Asn1 Compiler) is a tool for you if you want to (1)parse your asn1 file (2)create .java classes and (3)encode/decode instances of your classes. Just forget all asn1 byte streams, and take the advantage of OOP! BER, CER and DER are all supported
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Security is a subject of major concern in mobile agents. This project provides a security framework that allows the protection of mobile agents from third parties. A self-protected approach, where the agents themselves manage the process, is used.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    JASTI

    JASTI

    JASTI (Java AST Inspector)

    JASTI (Java AST Inspector) is an inspector for the OpenJDK compiler AST
    Downloads: 0 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB