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.

  • Simplify Purchasing For Your Business Icon
    Simplify Purchasing For Your Business

    Manage what you buy and how you buy it with Order.co, so you have control over your time and money spent.

    Simplify every aspect of buying for your business in Order.co. From sourcing products to scaling purchasing across locations to automating your AP and approvals workstreams, Order.co is the platform of choice for growing businesses.
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  • The Most Powerful Software Platform for EHSQ and ESG Management Icon
    The Most Powerful Software Platform for EHSQ and ESG Management

    Addresses the needs of small businesses and large global organizations with thousands of users in multiple locations.

    Choose from a complete set of software solutions across EHSQ that address all aspects of top performing Environmental, Health and Safety, and Quality management programs.
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  • 1
    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
    Last Update:
    See Project
  • 2

    JBVD

    Java Bytecode Viewer & Decompiler

    A very powerful java bytecode viewer and decompiler which makes use of the javassist open source library.
    Downloads: 6 This Week
    Last Update:
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  • 3
    An API and a graphical tool for inspection (viewing, searching and comparing) and manipulation (modification, obfuscation, refactoring of methods, fields, attributes and code) of classfiles for the Java platform.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 4
    jdec is a Java Decompiler. It can be used to reverse the bytecodes present in a .class File to produce a Java Source File which can be nearly correct or equivalent (Due To different Interpretations) to the original java file.[With UI & command line]
    Downloads: 2 This Week
    Last Update:
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  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
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  • 5
    BNF for Java is a BNF Compiler-Compiler, or Parser-Generator. It implements ISO Standard Backus-Naur Format, using Java. BNF allows you to create a syntax, or a complete language, to parse your data source. Your custom Java extensions generate output.
    Downloads: 2 This Week
    Last Update:
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  • 6
    A Java bytecode weaver that enables you to take advantage of the new 1.5 language features in your source code, while still retaining compatibility with 1.4 virtual machines.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    FIJI ForthIsh Java Interpreter

    FIJI ForthIsh Java Interpreter

    Java interpreter with Forth-like syntax, use it for testing java libs

    FIJI the ForthIsh Java Interpreter is an interactive environment with a procedural syntax similar to the Forth programming language. FIJI can load, introspect, and execute Java classes and methods. FIJI's main use is for unit and component testing of Java.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8
    Jabaco is a simple Visual Basic like programming language for the Java Virtual Machine. A comfortable development environment will support you in your tasks. Visit the Webcast and see Jabaco in action: http://www.jabaco.org/webcast.html
    Downloads: 3 This Week
    Last Update:
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  • 9
    More Than Parsing is a parser generator for context free grammars defined in a BNF-like format. It generates scanners, parsers, ASTs, etc. This sf project is no longer active, development will continue in a different place.
    Downloads: 3 This Week
    Last Update:
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  • Skillfully - The future of skills based hiring Icon
    Skillfully - The future of skills based hiring

    Realistic Workplace Simulations that Show Applicant Skills in Action

    Skillfully transforms hiring through AI-powered skill simulations that show you how candidates actually perform before you hire them. Our platform helps companies cut through AI-generated resumes and rehearsed interviews by validating real capabilities in action. Through dynamic job specific simulations and skill-based assessments, companies like Bloomberg and McKinsey have cut screening time by 50% while dramatically improving hire quality.
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  • 10
    Data Manipulator is a pure Java GUI interface for SQL databases. Not only an administrative tool, but one that allows a user to create forms and reports. Additionally A Java programmer can use code with Forms, reports a stand alone to manipulate the data
    Downloads: 2 This Week
    Last Update:
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  • 11
    Tho goal of this project is to provide an integrated development environment for developing (x)Harbour applications on various platforms.
    Downloads: 2 This Week
    Last Update:
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  • 12
    JSource is a small Java IDE written in Java using entirely Swing components. It has a light but powerful editor that allows creating, editing, compiling, and running Java files. It also supports syntax highlighting for other programming languages.
    Downloads: 2 This Week
    Last Update:
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  • 13
    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: 2 This Week
    Last Update:
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  • 14
    JPIE is an implementation of an Open Source Java to Prolog/Prolog to Java interoperability mecanism based on the Java VM.
    Downloads: 2 This Week
    Last Update:
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  • 15
    RunCC is a new kind of parsergenerator that generates parsers and lexers at runtime. Source generation is only optional. It features the absence of any cryptography. Although intended for small languages, it comes with Java and XML example parsers.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    SMIng parser and API in java for the SMIng proposal available at : http://www.ietf.org/html.charters/sming-charter.html
    Downloads: 2 This Week
    Last Update:
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  • 17
    Verto is a compiler that uses a top-down recursive descent parser implemented in Java for educational purposes. It translates Verto language (a subset of the C language) into Caesar machine language. Verto is the Latin word for interpret.
    Downloads: 2 This Week
    Last Update:
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  • 18
    YACCL is a simple Java recursive descent parser, in the tradition of other RDP technologies such as ANTLR and JavaCC. It differs from these in a number of ways: it is smaller and simpler (though not necessarily faster).
    Downloads: 2 This Week
    Last Update:
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  • 19
    several vaguely related projects worked on by me: a 3d engine with a javascript-like scripting language (pdsys); an older scheme dialect (vmsys); ... (2009-04-28: I have been gone for years, may try to put up some newer stuff...).
    Downloads: 2 This Week
    Last Update:
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  • 20
    jclasslib is now located at https://github.com/ingokegel/jclasslib
    Downloads: 2 This Week
    Last Update:
    See Project
  • 21
    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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  • 22
    JLite

    JLite

    Lightweight IDE for Java

    Lightweight IDE for Java targeting mostly students who are beginning Java programming. Create Java Application, Compile & Run Projects, Build Executable Jar Applications. It requires: 1. Java SDK 1.8 or higher 2. Dotnet Framework 2.0
    Downloads: 1 This Week
    Last Update:
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  • 23
    Smith is an open source, cross-platform ColdFusion® engine, written entirely in Java. Running on top of Java Runtime Environment and Java Servlet Container, it can be deployed virtually on any operating system and work with any web server.
    Downloads: 1 This Week
    Last Update:
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  • 24
    JReversePro is a Java Decompiler / Disassembler written in Java. Facility to view the ConstantPool contents is available. AWT, Swing and command-line versions are present.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    GELLO is an ANSI-accredited HL7 standard for creating computable, unambiguous clinical queries. This project creates an open source compiler and client-server IDE. Projects are stored in a subversion repository, and created by the RCP based client.
    Downloads: 1 This Week
    Last Update:
    See Project
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