Open Source C Programming Languages
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C Programming Languages
View 120 business solutionsBrowse 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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CLIPS Rule Based Programming Language
Expert System Tool
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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Vercel Zero
The programming language for agents
Zero is an experimental programming language from Vercel Labs designed with AI agents as first-class users. The project explores what a language, tooling system, and standard library might look like if agents need to read, debug, repair, and ship code reliably. It focuses on a small and regular language surface, structured diagnostics, predictable tooling, and machine-readable outputs. Zero is still pre-1 and intentionally unstable, so its syntax and APIs are meant for exploration rather than production use. The project includes commands for checking, running, building, graph inspection, size reporting, diagnostics, and repair-oriented workflows. Its main goal is to create a systems-oriented language environment that agents can understand and act on without relying only on human-readable compiler messages. -
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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. -
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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. -
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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. -
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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. -
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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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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). -
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ZIG
General-purpose programming language and toolchain
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software. -
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Gravity language
Gravity Programming Language
Gravity is a powerful, dynamically typed, lightweight, embeddable programming language written in C without any external dependencies (except for stdlib). It is a class-based concurrent scripting language with modern Swift-like syntax. Gravity supports procedural programming, object-oriented programming, functional programming, and data-driven programming. Thanks to special built-in methods, it can also be used as a prototype-based programming language. Gravity has been developed from scratch for the Creo project in order to offer an easy way to write portable code for the iOS and Android platforms. It is written in portable C code that can be compiled on any platform using a C99 compiler. The VM code is about 4K lines long, the multipass compiler code is about 7K lines and the shared code is about 3K lines long. The compiler and virtual machine combined add less than 200KB to the executable on a 64-bit system. -
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Wuffs
Wrangling Untrusted File Formats Safely
Wuffs is a memory-safe, zero-dependency library and domain-specific language for writing high-performance image codecs and related parsers. Instead of trusting ad-hoc C, Wuffs code is compiled to C with strong bounds, integer, and state checks inserted by construction, aiming to eliminate whole classes of security bugs without a heavy runtime. The design prioritizes predictable performance: decoders avoid dynamic allocation by default, return explicit “short read” signals, and run well in streaming or sandbox-free environments. The project ships battle-tested, CPU-friendly implementations for common image/container formats and bit-twiddly primitives like Huffman and checksum routines. Its standard library emphasizes portability and constant-time behavior where appropriate, which is valuable in security-sensitive contexts. Because the language is purpose-built, the resulting C output is small, auditable, and easy to embed in larger systems. -
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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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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. -
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Ring Programming Language
Simple and flexible programming language for applications development
Simple and flexible programming language for applications development. Ring is a practical general-purpose multi-paradigm language. The supported programming paradigms are Imperative, Procedural, Object-Oriented, Functional, Metaprogramming, Declarative programming using nested structures, and Natural programming. The language is portable (MS-DOS, Windows, Linux, macOS, Android, WebAssembly, etc.) and can be used to create Console, GUI, Web, Games, and Mobile applications. -
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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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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. -
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Zen C
Write like a high-level language, run like C
Zen C is a minimal yet expressive implementation of the C programming language that aims to balance simplicity with practical capability, making it ideal for educational use, language experimentation, and small-scale systems programming. It provides a clean syntax and semantics that closely mirror classic C while enforcing stricter rules to eliminate common pitfalls like undefined behaviors or hidden conversions that often cause bugs. Zen-C includes a lightweight compiler front-end and runtime that can target multiple platforms, enabling users to compile and run code on both desktop and embedded environments without heavy tooling. Because it prioritizes clarity and predictability, the language makes it easier for learners to understand core systems concepts while still accessing low-level memory control and performance. -
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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.
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Very high level modular programming language with multiple dispatch, object-oriented programming, functional closures and goal-directed programming.
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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
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aime
A C-like, high level programming language and interpreter.
aime is a programming language intended for application extension purposes. It is simple, with a C like syntax and automatic resource management. The interpreter interface has many options for connecting the interpreted programs to the embedding application state. It allows application supervision with regard to such concerns as execution length, memory allocation, error reporting. A standalone interpreter together with many demo/test programs is included. -
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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. -
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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. -
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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.
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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.
