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
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Try Free
  • 1
    OpenPEARL

    OpenPEARL

    PEARL Compiler and Runtime System

    PEARL is a high level procedural programming language, which was especially designed for the demanding need to have an expressive and comfortable language for solving multitasking problems when controlling technincal processes. PEARL is an abbreviation for "(P)rocess and (E)xperiment (A)utomation (R)ealtime (L)anguage". It was designed around 1975 at the IRT Institute of the Leibniz University in Hannover with the idea in mind to have an easy to learn programming language for realtime problems. For more, also historical information please visit (http://www.pearl90.de/). In 1998 PEARL-90 was standardized by the Deutsches Institut für Normung e.V. in DIN 66253-2. PEARL provides the standard data types and structures known from other procedural languages like e.g. PASCAL. Additionally PEARL brings special language constructs for managing real-time and multitasking tasks.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 2
    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.
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • 3
    RSP is a retargetable language for writing web applications. A web application written in RSP can be compiled into either ASP, JSP or PHP code and then deployed to a web server.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4
    RelaxNGCC is a tool for generating Java source code from a given RELAX NG grammar. By embedding code fragments in the grammar like yacc or JavaCC, you can take appropriate actions while parsing valid XML documents against the grammar.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 5
    The aim of this project is to create a fully functional COBOL compiler that translate into Java or directly into bytecode.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    A modest extension to C, XMTC allows representing parallel (PRAM) algorithms as parallel programs, and run XMTC code using a compiler and cycle accurate simulator of the University of Maryland explicit multi-threaded (XMT) many-core architecture.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7

    Xsemantics

    a DSL for type systems, reduction rules, interpreters for Xtext langs

    Xsemantics is a DSL (implemented in Xtext itself) for writing type systems, reduction rules, interpreters (and in general relation rules) for languages implemented in Xtext. It then generates Java code that can be used in your language implemented in Xtext for scoping and validation (it can also generate a validator in Java).
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    A 6809/6800/8080/8008 macro assembler written in Java.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    Jexpel is a library of compiling and execution of expressions for java whose the syntax is compatible with some of most popular expression languages.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
    Try It Free
  • 10
    jpaul is a Java implementation of several algorithms widely used in program analysis. It emphasizes flexibility and ease-of-use and is independent of any specific compiler infrastructure project. BSD Licence.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    upl:"universal programing language" is a platform that help new comers and children to learn programming. this platform helps to create programing languages for all languages and all purposes. eventually the languages are translated to java.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    This is an Open source compiler for Arabic C-like Syntax.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Pascal Interpreter
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    A Java based interactve fiction development system. Including netbeans plugins for development and a java player.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Iterpreter of Pascal language which may help programmers doing ther job. Include basic operations in/out, declarations of variables.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Aino is a Java bytecode to PIC microcontroller family assembly language compiler written in Java.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17

    AnyParser

    Problemless Grammar and Parser in Java

    Grammar based parsing in Java 8 to a tree structure. Create with no overhead a grammar in java and parse it into a tree structure. Will probably work right away with your grammar.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Argus is a highly integrated Eclipse plug-in. The purpose of this plug-in is to add additional Errors and Warnings to the Eclipse Framework, assisting Java programmers to create bug free, high quality code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Plugin for Eclipse aiming at fully integrating AspectJ into Eclipse.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    This is the implementation of the AspectJ plugin for NetBeans 6.0 and higher.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    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
    Last Update:
    See Project
  • 22
    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
    Last Update:
    See Project
  • 23
    This is the Aspen project - a language for high performance, scalable network services. The project consists of a compiler for the Aspen language and an associated runtime which dynamically allocates the appropriate number of threads for any workload.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Compiler for java assembly to class file. This compiler contains dead code detection and allow creating method, field and constructor from a java assembly file
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    An more efficient alternative for writing complex Asterisk dial plan files, without using the cumbersome line numbering scheme.
    Downloads: 0 This Week
    Last Update:
    See Project
Auth0 Logo