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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    Start Free
  • AI-powered service management for IT and enterprise teams Icon
    AI-powered service management for IT and enterprise teams

    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity. Maximize operational efficiency with refreshingly simple, AI-powered Freshservice.
    Try it Free
  • 1
    jRate is a real-time Java compiler and runtime system (based on GNU GCJ) with support for much of the Real-Time Specification for Java (RTSJ), including threading constructs with real-time constraints, asynchronous event handling, and memory regions.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    kin is a set of libraries and tools supporting meta-programming for engineering and technical computing applications. This JVM version of kin has been superseded by the stand-alone version being developed at http://purl.org/net/kin.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    lcc backend which produces java classes from C input. Although inefficient code is produced, C functionality such as function pointers and gotos are maintained.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    ooc is an object-oriented programming language which is implemented with a source-to-source translator to pure C99. It supports classes, abstract functions, foreach, ranges, etc. It intends to be modern, modular, extensible, yet simple and fast.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Deliver secure remote access with OpenVPN. Icon
    Deliver secure remote access with OpenVPN.

    Trusted by nearly 20,000 customers worldwide, and all major cloud providers.

    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.
    Get started — no credit card required.
  • 5
    openASN.1 is an Open Source Java toolkit for the Abstract Syntax Notation One (ASN.1) which consists of a compiler and codec with a low footprint runtime library.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Pgj is a parser generator written in Java. It generates a paser code for some programming language according to a template.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Code translation utility to convert Php website code into a Java/J2EE JSP equivalent code. Conversion application is written in Java. Utilizes Antlr to translate between the languages.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    zCOBOL Portable Mainframe COBOL Compiler

    zCOBOL Portable Mainframe COBOL Compiler

    zCOBOL portable mainframe COBOL compiler, part of the z390 project

    The zCOBOL portable mainframe COBOL compiler with support for compiling multiple dialects of COBOL into any one of several target language executable programs including HLASM compatible mainframe assembler, Java, C++, or Intel assembler. All downloads and other information are kept at the z390 project site; see the home page link for more information.
    Downloads: 0 This Week
    Last Update:
    See Project
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.