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

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  • 1
    CLIPS Rule Based Programming Language
    CLIPS is a forward-chaining rule-based programming language written in C that also provides procedural and object-oriented programming facilities.
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    4.7 out of 5 stars 31 Reviews
    Downloads: 806 This Week
    Last Update:
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  • 2
    php-src

    php-src

    The PHP Interpreter

    This is the official source repository of PHP, a popular open-source server-side scripting language primarily used for web development. PHP powers a significant portion of the web, including platforms like WordPress, Drupal, and Laravel. The repository includes the core language engine, standard libraries, and tools for compilation and deployment across systems.
    Downloads: 125 This Week
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  • 3
    MicroPython

    MicroPython

    Python implementation for microcontrollers and constrained systems

    MicroPython is a lean and efficient implementation of the Python 3 programming language that includes a small subset of the Python standard library and is optimised to run on microcontrollers and in constrained environments. The MicroPython pyboard is a compact electronic circuit board that runs MicroPython on the bare metal, giving you a low-level Python operating system that can be used to control all kinds of electronic projects. MicroPython is packed full of advanced features such as an interactive prompt, arbitrary precision integers, closures, list comprehension, generators, exception handling and more. Yet it is compact enough to fit and run within just 256k of code space and 16k of RAM. MicroPython aims to be as compatible with normal Python as possible to allow you to transfer code with ease from the desktop to a microcontroller or embedded system.
    Downloads: 18 This Week
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  • 4
    Agena

    Agena

    Agena is an interpreted procedural programming language.

    Agena is an easy-to-learn procedural programming language designed for science, scripting, and many other applications. Binaries are available for Windows, Linux, Solaris, OS/2, Mac OS X, Raspberry Pi and DOS.
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    5.0 out of 5 stars 1 Review
    Downloads: 203 This Week
    Last Update:
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  • 5
    Crafting Interpreters

    Crafting Interpreters

    Repository for the book "Crafting Interpreters"

    This repository is the companion to the book Crafting Interpreters. It contains the full source code for two interpreters (one in C and one in Java), the Markdown source of the book, the tooling to weave prose and code into a website, and build scripts to generate the executable interpreters. The book aims to teach from the ground up how to build a full-featured scripting language (called Lox) with parsing, AST, compiler / VM, garbage collection, classes, and more. Static site generator tooling to compose book + code into HTML. Markdown source of book chapters and text prose. Full interpreter implementation in C (clox).
    Downloads: 8 This Week
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  • 6

    Seed7

    Interpreter and compiler for the Seed7 programming language.

    Interpreter, compiler, libraries, documentation and examples for the Seed7 programming language. Seed7 is a general purpose programming language. It is a higher level language compared to Ada, C/C++ and Java. In Seed7 new statements and operators can be declared easily. Functions with type results and type parameters are more elegant than a template or generics concept. Object orientation is used where it brings advantages and not in places where other solutions are more obvious. Seed7 spares no effort to support portable programming. Several driver libraries assure that the access to operating system resources such as files, directories, network, clock, keyboard, console and graphics are done in a portable way. Although Seed7 contains several concepts from other programming languages, it is generally not considered a direct descendant of any other programming language.
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    5.0 out of 5 stars 7 Reviews
    Downloads: 35 This Week
    Last Update:
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  • 7
    SmallBASIC

    SmallBASIC

    SmallBASIC is a fast and easy to learn BASIC language interpreter

    SmallBASIC is a lightweight and powerful BASIC interpreter designed for simplicity and speed, suitable for hobbyists, educators, and retro computing enthusiasts. It offers a traditional text-based programming experience reminiscent of early microcomputers, while including modern features such as structured programming, graphics, and file I/O. SmallBASIC runs on multiple platforms, including Windows, Linux, Android, and DOS, making it accessible across a wide range of systems.
    Downloads: 6 This Week
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  • 8
    ZIG

    ZIG

    General-purpose programming language and toolchain

    A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
    Downloads: 5 This Week
    Last Update:
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  • 9
    X11-Basic

    X11-Basic

    A BASIC interpreter and compiler with graphics.

    X11-Basic is a dialect of the BASIC programming language with graphics capability that integrates features like shell scripting, cgi-Programming and full graphical visualisation into the easy to learn basic language on modern computers.
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    4.5 out of 5 stars 4 Reviews
    Downloads: 28 This Week
    Last Update:
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  • 10
    mruby

    mruby

    Lightweight Ruby

    mruby is a lightweight implementation of the Ruby programming language designed for embedding and integration into applications, particularly in resource-constrained environments such as embedded systems or game engines. It maintains compatibility with modern Ruby syntax while offering a significantly reduced footprint compared to the standard Ruby interpreter. The system includes its own virtual machine, bytecode compiler, and interactive shell, enabling developers to write, compile, and execute Ruby code efficiently. One of its core strengths is its embeddability, allowing developers to integrate scripting capabilities directly into applications written in C or C++. mruby also includes a package system called mrbgems, which enables modular extension of functionality through additional libraries. It supports compiling Ruby scripts into bytecode or even C source code, providing flexibility for deployment in different environments.
    Downloads: 2 This Week
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  • 11
    newRPL

    newRPL

    The classic RPL programming language reimplemented and reimagined.

    This project reimplements from scratch the RPL language made popular by HP programmable calculators, in portable C/C++. The main goal is to release a complete computing environment for various targets. There's currently 4 active targets: the HP 50g, HP39gs and HP40gs calculators and a PC simulator (see the downloads section!). Other ports are planned for the future.
    5.0 out of 5 stars 2 Reviews
    Downloads: 16 This Week
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  • 12
    Euphoria Programming Language
    This project will allow a group of people to develop the Euphoria programming language: interpreter, translator, binder, documentation etc. For more information visit https://openeuphoria.org
    5.0 out of 5 stars 1 Review
    Downloads: 25 This Week
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  • 13
    yorick

    yorick

    scientific programming language and graphics

    Yorick is an interpreted programming language for scientific simulations or calculations, postprocessing or steering large simulation codes, interactive scientific graphics, and reading, writing, or translating large files of numbers.
    5.0 out of 5 stars 1 Review
    Downloads: 13 This Week
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  • 14
    SNOBOL4, while known primarily as a string language excels at any task involving symbolic manipulations. It provides run time typing, garbage collection, user data types, on the fly compilation.
    Downloads: 5 This Week
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  • 15
    Ficl - small systems scripting with OO
    Ficl is a lightweight, embeddable scripting language designed to be incorporated into other programs, and especially embedded systems that may have memory and OS constraints. Applications include scripting, hardware bring-up, rapid prototyping, and system extensions. Unlike Lua or Python, Ficl acts as a component of your system - you feed it stuff to do, it does the stuff, and comes back to you for more. You can export compiled code to Ficl, execute Ficl code from your compiled code, or interact. Your choice.
    Downloads: 4 This Week
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  • 16
    SWLPC is both a stand alone scripting (interpreted) language and MUD programming language derived from LPC.
    Downloads: 3 This Week
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  • 17
    FMOCPP

    FMOCPP

    Eclipse C/C++ MinGW MSYS2

    The project aims to simplify the combined use of Eclipse, MinGW, and MSYS2 by providing a more accessible solution for preparing the development environment, compiling source code, and running C/C++ applications. In this way, students can focus on learning the fundamentals of programming, computational logic, and software solution development, while reducing the initial technical difficulties related to system paths, compilers, terminals, and dependencies.
    Downloads: 1 This Week
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  • 18
    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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  • 19
    Neptune

    Neptune

    A calculator like programming language

    Neptune is a simple programming language indented for quick mathematical calculations, e. g. shape field calculation or budget analysing.
    Downloads: 1 This Week
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  • 20
    AQ

    AQ

    AQ is an interpreted programming language. It is fast, small, simple a

    AQ is a fast, small, simple and safe interpreted programming language. It may be a great work.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
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  • 21
    BMDFM

    BMDFM

    Binary Modular DataFlow Machine (BMDFM)

    Binary Modular DataFlow Machine (BMDFM) is a software package that enables running an application in parallel on shared memory symmetric multiprocessing (SMP) computers using the multiple processors to speed up the execution of single applications. BMDFM automatically identifies and exploits parallelism due to the static and mainly dynamic scheduling of the dataflow instruction sequences derived from the formerly sequential program. The BMDFM dynamic scheduling subsystem performs a symmetric multiprocessing (SMP) emulation of a tagged-token dataflow machine to provide the transparent dataflow semantics for the applications. No directives for parallel execution are needed. More info: http://www.bmdfm.com https://bmdfm.github.io
    Downloads: 0 This Week
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  • 22
    A programming language to create games. Originally based on the Fenix Project.
    Downloads: 0 This Week
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  • 23
    Build your own Lisp

    Build your own Lisp

    Learn C and build your own programming language

    Build Your Own Lisp is the source repository for an educational book that teaches C by guiding readers through the creation of a small Lisp-like programming language. The course starts with C fundamentals and an interactive prompt before introducing parsing and language design. Later chapters build evaluation, error handling, S-expressions, Q-expressions, variables, functions, conditionals, strings, and a standard library. The finished interpreter stays under roughly 1,000 lines of C code. The repository contains the book’s HTML pages, source files, downloadable code, and website assets. A small Flask application can serve the complete book locally for offline study. Book content and source code use separate open licenses.
    Downloads: 0 This Week
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  • 24
    Chapel

    Chapel

    a Productive Parallel Programming Language

    Chapel is an emerging parallel programming language whose design and development are being led by HPE in collaboration with academia, computing labs, and industry. Chapel's goal is to improve the productivity of parallel programmers, from laptops to supercomputers. **Please note that Chapel development has moved to GitHub**
    5.0 out of 5 stars 5 Reviews
    Downloads: 0 This Week
    Last Update:
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  • 25
    Checked C

    Checked C

    Checked C is an extension to C that lets programmers write C code

    Checked C is an extension to C that lets programmers write C code that is guaranteed by the compiler to be type-safe. The goal is to let people easily make their existing C code type-safe and eliminate entire classes of errors. Checked C does not address use-after-free errors. Checked C adds static and dynamic checking to C to detect or prevent common programming errors such as buffer overruns and out-of-bounds memory accesses. The goal of the project is to improve systems programming by making fundamental improvements to C. This repo contains sample code, the extension specification, and test code. The Checked C project is extending the C programming language so that programmers can write more secure and reliable C programs. The project is developing an extension to C called Checked C that adds checking to C to detect or prevent common programming errors such as buffer overruns, out-of-bounds memory accesses, and incorrect type casts.
    Downloads: 0 This Week
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