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
    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**
    Downloads: 0 This Week
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  • 2
    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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  • 3
    Churmant

    Churmant

    a Lua-like syntax programming language

    Churmant (cure-ment), is a compiler for C language, it's used for producing Lua-like code, but also run in a blazingly fast speed, when compared to others. It also is very easy to maintain and read the header file, if you want to contribute. The reason why Churmant is its own language, is because its syntax are not like C entirely, like normal keyword cannot be stack inside each other, for example.
    Downloads: 0 This Week
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  • 4
    Frost Programming Language

    Frost Programming Language

    Frost Programming Language Interpreter

    Frost is an interpreted structured programming language based on C and Objective-C. It has dynamically typed variables, named function parameters, implicit memory allocation, and automatic garbage collection through reference counting (for arrays). As any major interpreted language, you can easily create bindings of your C library functions to Frost. Its interpreter is written in C, and it only uses libC and POSIX system calls (Lex and Yacc are not required). You can easily compile it on Linux or OS X using the included Makefile.
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  • 5
    Idris 2

    Idris 2

    A purely functional programming language with first class types

    In type-driven development, types are tools for constructing programs. We treat the type as the plan for a program, and use the compiler and type checker as our assistant, guiding us to a complete program that satisfies the type. The more expressive the type is that we give up front, the more confidence we can have that the resulting program will be correct. In Idris, types are first-class constructs in the language. This means types can be passed as arguments to functions, and returned from functions just like any other value, such as numbers, strings, or lists. This is a small but powerful idea, enabling relationships to be expressed between values; for example, that two lists have the same length. Assumptions to be made explicit and checked by the compiler. For example, if you assume that a list is non-empty, Idris can ensure this assumption always holds before the program is run.
    Downloads: 0 This Week
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  • 6
    Inform

    Inform

    The core software distribution for the Inform 7 programming language

    Inform is the core distribution of a powerful programming language and design system created for writing interactive fiction, where authors describe stories as text adventure games that players explore through typed commands. The language is distinctive for its natural-language-inspired syntax that reads almost like English, allowing storytellers to define rooms, objects, characters, and narrative logic in an intuitive way that emphasizes expressive clarity and literary structure. When you write in Inform, the source code is compiled into playable story files that run on interactive fiction virtual machines such as Z-machine or Glulx, enabling classic text-based gameplay with modern tooling. Inform handles the underlying complexities of text parsing, world modeling, state management, and player input, so authors can focus on narrative design rather than low-level engine details.
    Downloads: 0 This Week
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  • 7
    MetaCall Core

    MetaCall Core

    The ultimate polyglot programming experience

    A polyglot runtime that enables seamless execution of multiple programming languages within the same environment, improving interoperability between different codebases.
    Downloads: 0 This Week
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  • 8
    Mpp Project

    Mpp Project

    MPP is a C-based programming language that allows you to code more eas

    MPP is a C-based programming language that allows you to code more easily . #IDE : WMPP new features - a minimap has been added in order to improve navigation though the source code. - Code autocomplete - Status information - sidebar menu -Simple & Fast -Syntax highlighting -Compiling -Tabs [+] Supported languages : MPP, PHP, SQL, VB, HTML
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  • 9
    An easy to use template for Object Oriented Programming with Pure C ! Though the name refers to GCC , the main part is compatible with M$'s compiler ! Same as the OCC-GCC at Google Code.
    Downloads: 0 This Week
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  • 10
    PARUS

    PARUS

    Dataflow parallel programming language for clusters

    PARUS is a data-flow parallel programming language that allows to build parallel programs for clusters and MPP multiprocessors. The data-flow graph is automatically converted to the C++/MPI source and linked with the libparus runtime library. Also there are available tools for benchmarking cluster interconnect and visualize it.
    Downloads: 0 This Week
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  • 11
    Programming language designed to simplify the development of small and large-scale networked applications. PROSE includes an execution engine and language that compiles into platform-independent bytecode. Bytecode can also be assembled directly.
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  • 12
    RaptorJIT

    RaptorJIT

    A dynamic language for system programming (LuaJIT fork)

    RaptorJIT is a Lua implementation suitable for high-performance low-level system programming. If you want to use a simple dynamic language to write a network stack; a hypervisor; a unikernel; a database; etc, then you have come to the right place.
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  • 13
    Ravi Programming Language

    Ravi Programming Language

    Ravi is a dialect of Lua, featuring limited optional static typing

    Ravi Programming Language is a derivative of Lua 5.3 with limited optional static typing and MIR-based JIT compiler. Ravi is a derivative/dialect of Lua with limited optional static typing and JIT/AOT compilers. The name Ravi comes from the Sanskrit word for the Sun. Lua is perfect as a small embeddable dynamic language so why a derivative? Ravi extends Lua with static typing for greater performance under JIT compilation. However, static typing is optional and therefore Lua 5.3 programs are also valid Ravi programs. There are other attempts to add static typing to Lua (e.g. Typed Lua but these efforts are mostly about adding static type checks in the language while leaving the VM unmodified. So the static typing is to aid programming in the large - the code is eventually translated to standard Lua and executed in the unmodified Lua VM.
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  • 14

    SC

    SC is a C based meta/programming language/environment

    SC is a C based/compatible language that uses a binary source code format and a "special" editor to provide a far more advanced programming and meta-programming environment. The basic philosophy is to "simplify" the "form" and not the "meaning" of C. SC allows you to write source code that can analyze and modify itself. Which in turn allows you to create far more compact and powerful libraries, templates, toolkits and simply source code, using techniques similar to aspect and/or language oriented programming. SCEdit is an editor that comprehends the source code on a level similar to the compiler, giving you feedback about anything that can be concluded from the source code. It can also interpret meta-functions from the source code to either analyze, modify or create new code, allowing you to automate a complex workflow for and from your source code. Furthermore SC can be both compiled, interpreted, and just in time compiled.
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  • 15
    The Acton programming language

    The Acton programming language

    The Acton Programming Language

    Write programs that seamlessly run as a distributed system over an entire data center or region. All without a single line of RPC code. Acton automatically persists the state of your application (orthogonal persistence) to a built-in distributed backend. No need to use a database or message broker ever again. 0 lines of persistence code. Built-in redundancy; Acton's transactional, high-performance distributed RTS can seamlessly resume application state after hardware failures. Never stop for an upgrade; Live upgrade your running application through compiler-supported code and data migration. Acton programs, and the actor model, work well from simple script-style applications on a single machine up to large distributed systems across a Data Center. Run at your scale.
    Downloads: 0 This Week
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  • 16
    Very high level modular programming language with multiple dispatch, object-oriented programming, functional closures and goal-directed programming.
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  • 17
    Wuffs

    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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  • 18
    Zen C

    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.
    Downloads: 0 This Week
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  • 19

    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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  • 20

    cowbel (obsolete)

    An experimental programming language

    cowbel is a minimalist experimental programming language. It features strict types, static compilation into real machine code (via C), an object oriented system based on interfaces and composition, generics, no null, and a global garbage collector. It is intended to produce fast, tight code for use in systems programming, and to show that you don't need a complex language to be expressive and usable. We've moved! Go to http://cowlark.com/cowbel instead.
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  • 21
    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.
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  • 22
    roses

    roses

    The roses project is a C programming language and OpenGL tutorial.

    The roses project is C programming language and OpenGL API programming tutorial for linux and unix based systems designed to be educational and creative, and most of all fun, for anyone wanting to learn more about computers and computing in general.
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  • 23

    shibatch

    Shibatch's software project

    In this project, software applications made by Naoki Shibata are presented.
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  • 24
    SWLPC is both a stand alone scripting (interpreted) language and MUD programming language derived from LPC.
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  • 25
    vApiWave

    vApiWave

    A fast programming language combining old features with new.

    A programming language designed to hopefully be as fast as Lua that uses a minimal instruction set and maximum functionality as possible to provide an environment where mistakes are unlikely. Currently in an experimental prototype stage, but should eventually be able to accomplish anything on a Linux PC and almost anything on Windows and Mac.
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