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.

  • Passwordless Authentication and Passwordless Security Icon
    Passwordless Authentication and Passwordless Security

    Identity is everything. Protect it with Duo.

    It’s no secret — passwords can be a real headache, both for the people who use them and the people who manage them. Over time, we’ve created hundreds of passwords, it’s easy to lose track of them and they’re easily compromised. Fortunately, passwordless authentication is becoming a feasible reality for many businesses. Duo can help you get there.
    Get a Free Trial
  • Our Free Plans just got better! | Auth0 by Okta Icon
    Our Free Plans just got better! | Auth0 by Okta

    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
  • 1
    QJ-Pro is a sophisticated code quality assessment and coding standards technology for Java development detecting potential software defects at compile time. It offers the ability to significantly reduce code review effort by automating a major portion of
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Recoder.C# is a Java framework for C# program analysis and source code transformation. It computes an easy to use syntactic and semantic program model containing cross references and supports transformation rollbacks and incremental model updates.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    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: 0 This Week
    Last Update:
    See Project
  • 4
    This is a fork from retroweaver based on the 1.1 release. The modifications have been merged back into retroweaver and all future development will be done there. This project is now inactive.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Comprehensive Cybersecurity to Safeguard Your Organization | SOCRadar Icon
    Comprehensive Cybersecurity to Safeguard Your Organization | SOCRadar

    See what hackers already know about your organization – and stop them from getting in.

    Protect your organization from cyber threats with SOCRadar’s cutting-edge threat intelligence. Gain 360° visibility into your digital assets, monitor the dark web, and stay ahead of hackers with real-time insights. Start for free and transform your cybersecurity today.
    Free Trial
  • 5
    Rev = Really Easy Validation - write your form validation code once in this simple and powerful language that generates code for JavaScript, Perl, PHP, and Java. With Rev you get server side and client side data validation with no duplicated code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    The aim of this project is to create a fully functional COBOL compiler that translate into Java or directly into bytecode.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    A parsing toolkit that supports both top-down (LL(1) and Simple Precedence) and bottom-up parsing (LR(0), SLR(1), LR(1) and LALR(1)). The toolkit supports generating Java parsers for all the bottom-up parsing methods, based on a CUP definition.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    STDL (Structured test description language) is a domain-specific testing language that is used to auto-generate unit test code. It supports a myriad of output languages (incl. C#). The project's aim is that of reducing the resources required for testing
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Shark is an open-source preprocessor for Java that lets you do more with less. Shark makes Java sharper by adding Apache Velocity-style foreach loops and property getters, C#-style property setters, and more. Shark includes a commandline tool as we
    Downloads: 0 This Week
    Last Update:
    See Project
  • Sales CRM and Pipeline Management Software | Pipedrive Icon
    Sales CRM and Pipeline Management Software | Pipedrive

    The easy and effective CRM for closing deals

    Pipedrive’s simple interface empowers salespeople to streamline workflows and unite sales tasks in one workspace. Unlock instant sales insights with Pipedrive’s visual sales pipeline and fine-tune your strategy with robust reporting features and a personalized AI Sales Assistant.
    Try it for free
  • 10
    The TechTrader Bytecode Toolkit is a high-level set of APIs for manipulating java bytecode. It is primarily targeted at making runtime and/or compile-time enhancements to existing java classes, or creating new java classes on the fly.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    The Clump language proposes a natural evolution of the basic Object-Oriented paradigm revisiting the duality existing between the data and the knowledge. This implies a design based on Class-Oriented and Pattern-Oriented approaches in a same language
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    DKU is an embedded parallel language, or "piggy-back" language that uses function calls to invoke the language's execution model. It tunes task-size to the hardware while hiding hardware details for high performance portability of parallel code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    The mesh programming language is a universal styling language that utilizes the Java framework. It contains many novel features, rigorous type checking, and integrated extendability.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    A small Java utility used with AspectJ which allows any checked exception to be re-thrown as an unchecked RuntimeException. This allows aspects to generically throw any checked exception without the compiler complaining. BCEL is used to accomplish this.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    A collection of language tools based on recursive adaptive grammars (RAGs), built around a general RAG parsing algorithm.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    The Tree Processing Language allows the specification of an object oriented tree structure, with strong seperation of concerns, which can be compiled into a type safe class hierarchy implementing the tree.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    TreeDL (Tree Description Language) is a notation for tree structures used by programs (like syntax trees) and tool for translation of tree descriptions to target programming language, docs generation, etc. Tool's functionality can be extended by plugins.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    ULS

    A lexical analyzer generator that makes the class source code.

    ULS is a class library for creating lexical analyzer from language specification file. It's provided as C/C++/C# and Java (class) libraries with a few of tools on Linux/Windows platform.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    UfakPython is a small subset of Python programming language, for small embedded devices, like PICs. UfakPython sources are translated to C by UfakPython Compiler. Small Device C Compiler can then compile the C outputs to the target device's codes.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Waxeye is a parser generator based on parsing expression grammars (PEGs). It supports C, Java, Javascript, Python, Ruby and Scheme.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    XML encoder for source code
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    This project was started in an effort to ease development of Swing applications by creating a XML to Swing rendering utility. Although this project is definitely in the first released state, it shows great promise and focuses solely on the Swing API as a
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    XPL is the eXtensible Programming Language. XPL is an application of XML for interchange of computer programs.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    antlraux is a java package thought to be used in combination with antlr(http://www.antlr.org). Features contextual information management, command line parsing and lexical information treatment.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    classgen is a Java class generator. It produces classes for abstract syntax trees in compiler frontends from simple and compact specifications. Generated classes have builtin support for the Visitor design pattern.
    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.