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.

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  • 1
    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler and Emulator

    z390 Portable Mainframe Assembler and Emulator
    Downloads: 7 This Week
    Last Update:
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  • 2
    EJE (Everyone's Java Editor)

    EJE (Everyone's Java Editor)

    Learn Java the easy way!

    EJE is a simple Java editor, perfect to learn Java, without learning a complex development tool. EJE is multi-platform (written in Java), light- weight, user-friendly and have several useful basic features. A good help to start with Java! Supports the study of the Java for Aliens book (www.javaforaliens.com), or other my books (Italian Language) like www.nuovojava.it. You don't need to install the JDK anymore (the runtime is embedded). See the video "How to create the "Hello World App in 20 Seconds" at https://www.youtube.com/watch?v=aKiEAGbEk2k
    Downloads: 8 This Week
    Last Update:
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  • 3
    JPIE is an implementation of an Open Source Java to Prolog/Prolog to Java interoperability mecanism based on the Java VM.
    Downloads: 21 This Week
    Last Update:
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  • 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: 6 This Week
    Last Update:
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  • 5
    ecd

    ecd

    An Eclipse Plugin to integrate different Class Decompiler seamlessly i

    Downloads: 15 This Week
    Last Update:
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  • 6
    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: 8 This Week
    Last Update:
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  • 7
    JODE is a java package containing a decompiler and an optimizer (aka obfuscator ;-) for java.
    Downloads: 7 This Week
    Last Update:
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  • 8
    SableCC is a parser generator which generates object-oriented frameworks for building compilers, interpreters and other text parsers. SableCC keeps a clean separation between machine and user code which leads to a shorter development cycle.
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    Downloads: 12 This Week
    Last Update:
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  • 9
    The LALR parser generator (LPG) is a tool for developing scanners and parsers written in Java, C++ or C. Input is specified by BNF rules. LPG supports backtracking (to resolve ambiguity), automatic AST generation and grammar inheritance.
    Downloads: 4 This Week
    Last Update:
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  • 10

    X10

    Performance and Productivity at Scale

    X10 is a class-based, strongly-typed, garbage-collected, object-oriented language. To support concurrency and distribution, X10 uses the Asynchronous Partitioned Global Address Space programming model (APGAS). This model introduces two key concepts -- places and asynchronous tasks -- and a few mechanisms for coordination. With these, APGAS can express both regular and irregular parallelism, message-passing-style and active-message-style computations, fork-join and bulk-synchronous parallelism. Both its modern, type-safe sequential core and simple programming model for concurrency and distribution contribute to making X10 a high-productivity language in the HPC and Big Data spaces. User productivity is further enhanced by providing tools such as an Eclipse-based IDE (X10DT). Implementations of X10 are available for a wide variety of hardware and software platforms ranging from laptops, to commodity clusters, to supercomputers.
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    Downloads: 11 This Week
    Last Update:
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  • 11
    JNode is a Java New Operating system Design Effort. JNode is a simple to use and install Java operating system for personal use on modern devices. Any java application runs on it, fast and safe. See our homepage for additional information.
    Downloads: 3 This Week
    Last Update:
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  • 12
    Java Decompiler, Disassembler and Bytecode debugger. Decompiler supports Java 5 (e.g. generics, for-each loops etc). Debugger allows user to step through each bytecode and view program state. Contains Swing GUI.
    Downloads: 10 This Week
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  • 13
    OJ (f.a.k.a. OpenJava) is an object-oriented macro system with a compile time metaobject protocol for Java.
    Downloads: 9 This Week
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  • 14
    A Java 2 (JDK 1.3/1.4) compatible virtual machine. joeq is unique in that it is almost entirely implemented in Java, making it reliable and efficient. It is also language-independent, so code from any language can be seamlessly and dynamically compiled.
    Downloads: 5 This Week
    Last Update:
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  • 15
    GroIMP

    GroIMP

    Growth-grammar related Interactive Modelling Platform

    Important: Groimp migrates to Gitlab. You can find the latest code at "https://gitlab.com/grogra/groimp/". The version on Sourceforge will not be updated anymore. The modelling platform GroIMP is designed as an integrated platform which incorporates modelling, visualisation and interaction. It exhibits several features which makes itself suitable for the field of biological or ALife modelling: The “modelling backbone” consists in the language XL. It is fully integrated, e.g., the user can interactively select the rules to be applied. GroIMP provides classes that can be used in modelling: Turtle commands, further geometrical classes like bicubic surfaces, the class Cell which has been used in the Game Of Life implementation, and so on. The outcome of a model is visualised within GroIMP. In the visual representation of the model output, users can i
    Downloads: 2 This Week
    Last Update:
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  • 16
    HydraDragonAntivirus

    HydraDragonAntivirus

    Open Source Antivirus/XDR for Windows operating system

    Dynamic and static analysis with Real Time Malware Analysis with Antivirus for Windows, including open-source XDR (3 EDR projects), ClamAV, YARA-X, machine learning AI, behavioral analysis, Unpacker, Deobfuscator, Decompiler, website signatures, Ghidra, Suricata, Sigma, Kernel, Hypervisior based protection and much more than you can imagine.
    Downloads: 7 This Week
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  • 17
    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: 4 This Week
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  • 18
    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:
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  • 19
    Acheron is a Common Lisp (CL) to JavaScript (JS) compiler. Programs are written in a subset of CL and after compilation executed in a webbrowser. Acheron has native functions that are written in JS and are the bridge between CL and JS.
    Downloads: 5 This Week
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  • 20
    Open RVC-CAL Compiler
    The Open RVC-CAL Compiler (Orcc) is a compiler under BSD license for the RVC-CAL dataflow programming language. Please consult the project homepage at http://orcc.sourceforge.net for more information.
    Downloads: 5 This Week
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  • 21
    jclasslib is now located at https://github.com/ingokegel/jclasslib
    Downloads: 5 This Week
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  • 22

    JavacTo

    Translate java source into another language

    JavacTo is a prototype tool designed to evaluate the need and value of translating java code into another programming language. An ideal language for translation is a language that supports the concept of packages, classes, interfaces, and enums as well as built-in memory garbage collection. Languages such as C# and D, are well suited as a translation “To” language. Eclipse project provided to get started. Three visitor classes provided to learn how to use JavacTo and write visitor classes. Vistor javadocs available at: http://docs.oracle.com/javase/8/docs/jdk/api/javac/tree/index.html
    Downloads: 4 This Week
    Last Update:
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  • 23
    Jikes RVM
    The Jikes Research Virtual Machine (RVM) is designed to execute Java(TM) programs that are typically used in research on fundamental virtual machine design issues.
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    Downloads: 4 This Week
    Last Update:
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  • 24
    Kawa is a full Scheme implementation. It implements almost all of R5RS (for exceptions see Restrictions), plus some extensions.
    Downloads: 4 This Week
    Last Update:
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  • 25
    In this project we aim to develop scheme libraries for developing various web applications (especially servlets and xml-based web services). Our approach is to use jscheme (an open source implementation of scheme in Java) as the core language which allow
    Downloads: 4 This Week
    Last Update:
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