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

  • $300 in Free Credit Towards Top Cloud Services Icon
    $300 in Free Credit Towards Top Cloud Services

    Build VMs, containers, AI, databases, storage—all in one place.

    Start your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.
    Get Started
  • Go From AI Idea to AI App Fast Icon
    Go From AI Idea to AI App Fast

    One platform to build, fine-tune, and deploy ML models. No MLOps team required.

    Access Gemini 3 and 200+ models. Build chatbots, agents, or custom models with built-in monitoring and scaling.
    Try Free
  • 1
    C Cod is an application that allows for a C source file to be "Compiled on Demand" prior to being executed. The source files are compiled and executed on the fly. This allows for C to be treated like a scripting language.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 2
    CppCC is an object-oriented scanner and LL(k) parser generator. It aims to replace LEX&YACC for those who write C++ applications that involve parsing.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    Cmajor

    Cmajor

    Cmajor is an experimental programming language.

    Cmajor is an experimental programming language strongly influenced by C++ and C#. It is semantically closer to C++ than C# and syntactically closer to C# than C++.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4
    Provides, maintains, and improves the GNU development tools on Hitachi H8 series.
    Downloads: 2 This Week
    Last Update:
    See Project
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 5
    Compiler, Interpreter and Docs for Superx++: the general purpose object-oriented programming language based on XML. Superx++ conforms fully to the XML 1.0 specification and is ideal for manipulating XML and other markup language documents.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    Translate SWF is C++ based compiler for Macromedia's ActionScript language. Translate currently supports Actionscript 1. 06/12/2010: This project is now hosted on GitHub: https://github.com/StuartMacKay/translate-cxx
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    epocemx is a collection of tools (including a port of GCC) and libraries which enable building EPOC R5 applications under Unix.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    ppC++, is an HTML-preprocessed C/C++ language which is adapted especially for active web pages programming and brings new additional features which make web programming very easy.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 9
    Downloads: 2 This Week
    Last Update:
    See Project
  • 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
  • 10
    Deb-Creator
    Deb-Creator is a tool to quickly create Debian packages. The program provides a simple graphical user interface written in C++ using Qt Creator. It uses the dpkg command in Linux to build the final Debian package.
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    HipHop for PHP is a source code transformer for PHP script code. HipHop programmatically transforms PHP source code into highly optimized C++ and then uses g++ to compile it to machine code.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    This project is no longer hosted here. Please follow the link below.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    The purpose of the FreeSC project is develop free scenery compiler/decompiler for Microsoft Flight Simulator.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    The OpenCL Kernel Compiler compiles OpenCL kernel files and presents any compilation errors in a form commonly used by "regular" C/C++ compilers. It is intended to be used as a supporting tool for application developers working with OpenCL. Version 0.3.0 adds additional features for saving compiled binaries and selecting platforms/devices.
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    This is a compiler which produces ANNs out of a simple, procedural programming language. Those programs can then be subject to genetic algorithms and neuro-evolution to enhance them automatically.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    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: 1 This Week
    Last Update:
    See Project
  • 17
    A collection of tools to tokenize PBASIC source code and send it to a BASIC Stamp microcontroller.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18
    This is an attempt to create a new and extremely simple programming language in which even complete novices may utilize it to create programs. The language will be kept as close to English as possible allowing for easy comprehension of the syntax.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Brook+ is a high level C-like language with extensions for stream programming on different compute devices such as CPUs and GPUs. Supports an ATI CAL and x86 CPU backend. Keywords : GPGPU, GPU Computing, HPC
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    HGL Suite

    HGL Suite

    A piece of useless crap

    March 2013 this project was announced first to public, but the feedback was ZERO. So I guess it is insanely bad and unusable. Ok. But sorry, I decided to continue it for myself to improve my inability and unexperience in software development FOR MYSELF. Even if it seemed to be the worst thing ever, I *NEED* to develop software for my own well being and even if I apparently - after over 20 years since the first lines of code I wrote - I improved my ability not a single bit than it is like that and I can't change it. BTW: there was feedback indeed: from the own 'family': "it is done by YOU so it cannot be of use for anybody!" (Literally: it contains algorithms and algorithms are evil and are non-existent in usable software)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    A collection of development tools and build environments for Interix using the Microsoft compiler. Aims to facilitate interaction between Visual Studio, Microsoft build and GNU tools. Ex Visual Studio Addins, shell scripts, makefiles and library patches.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22

    Loglan82

    Loglan language and Virtual Loglan Processor repository

    Loglan'82 is a programming language conceived for object and distributed programming. It has many features that make Loglan'82 a tool surpassing other programming languages: * It enjoys a unique safe and efficient system of managing objects, see [[Safe dealocation]], * It offers modules of classes (__class__), moreover it allows to declare modules of cooperating objects i.e. **coroutines** and modules of threads ('''process'''). One can create not only objects of classes, but also objects of coroutines with their ''fibres'' and objects of processes, aka agents with their *threads*. * Virtual machines of Loglan may connect (through internet) in a virtual, multiprocesorr computer.This allows to distribute a computation of a program between processors in a controlled way. * Objects of processes (agents) can be alocated on different nodes of a network of virtual machines or on the same machine.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    Prop is a pattern matching language based on C++. It implements algebraic datatypes, pattern matching and rewriting, and generates C++ code as output.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    A fine report generator. If you(r program) need(s) to create beautyful printed pages from a database, then this is what you are searching. Supports postgresql and mysql databases.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Sasm is a small translator which translates a programming language (still in developement) into assembly which can be compiled with NASM.
    Downloads: 1 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB