Browse free open source Compilers and projects below. Use the toggles on the left to filter open source Compilers by OS, license, language, programming language, and project status.

  • Simplify IT and security with a single endpoint management platform Icon
    Simplify IT and security with a single endpoint management platform

    Automate the hardest parts of IT

    NinjaOne automates the hardest parts of IT, delivering visibility, security, and control over all endpoints for more than 20,000 customers. The NinjaOne automated endpoint management platform is proven to increase productivity, reduce security risk, and lower costs for IT teams and managed service providers. The company seamlessly integrates with a wide range of IT and security technologies. NinjaOne is obsessed with customer success and provides free and unlimited onboarding, training, and support.
    Learn More
  • Auth for GenAI | Auth0 Icon
    Auth for GenAI | Auth0

    Enable AI agents to securely access tools, workflows, and data with fine-grained control and just a few lines of code.

    Easily implement secure login experiences for AI Agents - from interactive chatbots to background workers with Auth0. Auth for GenAI is now available in Developer Preview
    Try free now
  • 1
    Lazarus Code and Component Repository
    Lazarus is a free and open source development tool for the Free Pascal Compiler. The purpose of this project is to serve as a Code Repository, Wiki Knowledgebase and support site for converting existing components and libraries to work with Lazarus and the Free Pascal Compiler.
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    Downloads: 241 This Week
    Last Update:
    See Project
  • 2

    MinGW-builds

    Dual-target (32 & 64-bit) MinGW-W64 compilers for 32 & 64-bit Windows

    Projects joined MinGW-W64, and the new builds will be available on the MinGW-W64 site: https://sourceforge.net/projects/mingw-w64
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    Downloads: 199 This Week
    Last Update:
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  • 3
    Java Modeling Language (JML)
    This sourceforge site for the project is now DEPRECATED and not updated. All current work and new releases are on github: https://github.com/OpenJML/OpenJML. The Java Modeling Language (JML) is a behavioral interface specification language that can be used to specify the behavior of Java modules (as in design by contract -- DBC). It has many tools to do assertion checking, unit testing, etc. The principal current tool of the project is OpenJML -- cf. https://www.openjml.org, with binary downloads from https://github.com/OpenJML/OpenJML/releases/latest
    Downloads: 3 This Week
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  • 4
    JodeEclipse is a plugin for integrating the Jode Java Decompiler with the Eclipse IDE.
    Downloads: 2 This Week
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    See Project
  • Powering the best of the internet | Fastly Icon
    Powering the best of the internet | Fastly

    Fastly's edge cloud platform delivers faster, safer, and more scalable sites and apps to customers.

    Ensure your websites, applications and services can effortlessly handle the demands of your users with Fastly. Fastly’s portfolio is designed to be highly performant, personalized and secure while seamlessly scaling to support your growth.
    Try for free
  • 5
    CDK4AVR stands for Cross Development Kit for Atmels AVR RISC processor serie and should you support with a comprehensive Assembler and C development environment for even this processor familie under Linux or similar host systems.
    Downloads: 1 This Week
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  • 6
    ESELC is a interpreter for the Easy Stack Environment Language (ESEL). It is written in ISO C++.
    Downloads: 1 This Week
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  • 7
    The prc-tools project currently consists of patches to binutils, gdb, and GCC to support Palm OS, along with several post-linker tools.
    Downloads: 1 This Week
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  • 8
    Java AS400 RPG source code editor, debugger, IDE.
    Downloads: 1 This Week
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  • 9
    LoLCode1337 (speak lolcode leet) is an implementation of the esoteric programming language lolcode. It offers a compiler, virtual machine (=interpreter), debugger, internal editor and it's commands set is close to that what other lolcode implementations offer. More to come soon.
    Downloads: 1 This Week
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    See Project
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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  • 10
    Introspect on running programme, view and alter object fields and methods. Edit the code of any method at runtime; apply the changes to any combination of objects, such as an array, or a complete class. Complete rewrite underway available Jan 2007.
    Downloads: 1 This Week
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  • 11

    BJCS CSharp IDE

    Basic and Easy to use CSharp IDE with compiler.

    BJCS CSharp IDE is written by BJ Erasmus and is a CSharp IDE. It's a very basic and easy to use IDE with a function that can be used to create an installation file of your project. Features: Syntax highlighting Edit Assembly info Compile with any .NET FrameWork Add an icon Add dll's Debugging function Basic auto-complete Tutorial Help Example codes/projects This program is still in development. It's currently available in a usable state
    Downloads: 0 This Week
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  • 12
    Z80 ASM editor that gives you real-time info about Mnemonics, Waitstates/Clock cycles, and Labels. Features code completion, real-time debugging and T-states profiling.
    Downloads: 0 This Week
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  • 13
    Brainfuck Center is an IDE and compiler for your Brainfuck scripts. It includes a full debugger with step-by-step debugging and much more. MDI window!
    Downloads: 0 This Week
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  • 14
    We extend the Eclipse IDE with tools for development in Haskell, a functional programming language, providing support for a wide range of tools (compilers, interpreters, doc tools etc.) in a coherent, convenient and configurable environment.
    Downloads: 0 This Week
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  • 15
    JavaCET is an API wrote in Java that allows to analyze Java source code and libraries, and control its execution and its trace in an integrated and comprehensible object-oriented way. It allows backwards execution.
    Downloads: 0 This Week
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  • 16
    This project aims to implement an LC2/LC3 assembler and simulator for the Linux and Windows platforms.
    Downloads: 0 This Week
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  • 17
    CDK4MSP stands for Cross Development Kit for the Texas Instruments MSP430 MCUs and should you support with a comprehensive Assembler and C development environment for even this processor familie under Linux or similar host systems. It will present only f
    Downloads: 0 This Week
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  • 18

    RapidDevelop R#

    RapidDevelop is an IDE and Compiler for a new programming language!

    RapidDevelop R# is an IDE and Compiler for a programming language called RapidLang. RapidLang (or r#) is a programming language based on c# and .Net which introduces some new paradigms and shorthand to improve development times and to help ease the creation of software in general. Being an extension of C#, you can link, build or compile native C# assemblies or Classes and Libraries so that you can very easily port existing code. The programming language also exists in a managed shared library and can be dropped into any .net project so that you can use the compiler in your own projects, with plans to even provide executing compiled code in memory, effectively creating a RapidLang Scripting Language plugin!
    Downloads: 0 This Week
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  • 19
    TrueProgrammer by TrueTech is the first multi-platform, multi-language IDE/compiler for developers. The system works with BASIC, Tcl, Assembly, C++ and more. Currently, the project is in early production in TCL/TK.
    Downloads: 0 This Week
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  • 20
    VirtuAL3101 provides a series of tools to develop effects using the AL3101 DSP from Alesis. It includes an assembler/disassembler, a simulator, an application generator with its graphical interface and various effects.
    Downloads: 0 This Week
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  • 21
    XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]
    Downloads: 0 This Week
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  • 22

    gCode

    grieferCode

    Yet another scripting language Main features: - Pointers - Structures - Objectoriented programming (yet to come) - code in plain english - easy to learn (based on C, C++, Java, Pascal, Python, Lua)
    Downloads: 0 This Week
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  • 23
    jbytecode is a Java bytecode disassembler/assembler written in Python. Dissasembly code is aligned with Java bytecodes in the class file so modification and re-assembly is always possible, even when class is obfuscated.
    Downloads: 0 This Week
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  • 24
    rngcc is "really nice GNU C compiler" it's the GUI for the standard GCC on Unix systems rngcc is fully written in c
    Downloads: 0 This Week
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  • 25
    xacc.ide is a opensource IDE aimed at mainly .NET development. It has a code editor written in 100% C# code, which is faster than most commercial offerings.
    Downloads: 0 This Week
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