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Copyfree Works

The license status of some works may be more complex than it at first appears here. In some cases, the license status listed for a given work is the "primary" license under which it is distributed. In several cases, parts of the work may be distributed under other licenses -- potentially even non-copyfree licenses.

Where present, descriptions are typically drawn from the claims of the projects themselves, and represent neither claims nor opinions of the Copyfree Initiative. Inclusion here (with or without description) does not constitute, and should not be inferred as, endorsement of any project.

Listings are presented for informational purposes only, and no representation is made as to the accuracy or utility of any information provided. Use at your own risk.

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11lpermalink

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11l is a semi-esoteric high-level general-purpose programming language, which provides a simple and direct mapping to hardware and aims to follow a zero-overhead principle. 11l is statically typed, but feels very much like a dynamically typed language.

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8ccpermalink

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8cc is a compiler for the C programming language, intended to support all C11 language features while keeping the code as small and simple as possible.

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Agdapermalink

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Agda is a dependently typed functional programming language, and a proof assistant.

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Alice MLpermalink

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Alice ML is a functional programming language based on Standard ML, extended with rich support for concurrent, distributed, and constraint programming.

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Checked Cpermalink

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Checked C is an extension to C that adds static and dynamic checking to detect or prevent common programming errors such as buffer overruns, out-of-bounds memory accesses, and incorrect type casts.

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Cleanpermalink

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Clean is a general purpose, state-of-the-art, pure, and lazy functional programming language designed for making real-world applications. Some of its most notable language features are uniqueness typing, dynamic typing, and generic functions.

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CMU Common Lisppermalink

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CMUCL is a high-performance, free Common Lisp implementation that runs on most major Unix platforms.

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cprocpermalink

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Built on QBE, cproc is a C11 compiler implements most of the language and is capable of building software including itself, mcpp, gcc 4.7, binutils, and more. It was inspired by several other small C compilers including 8cc, c, lacc, and scc.

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Digital Mars Cpermalink

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DMC, the Digital Mars Compiler, is a one-step program to compile and link C++, C and ASM files, previously known as "sc".

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DMDpermalink

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D is a systems programming language with C-like syntax and static typing. It combines efficiency, control, and modeling power with safety and programmer productivity. DMD is the reference implementation compiler.

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eC [1] [2]permalink

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The eC project provides an expressive and intuitive, C style, reflective object-oriented programming language as a superset of C, with a modern module system with restricted access control that can be used instead alongside traditional header files, and an extensible type system. It comes with the Ecere SDK, for cross-platform GUI, 2D/3D graphics and network programming support, an IDE, and more.

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Epigrampermalink

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Epigram is a dependently typed programming language and an interactive programming environment.

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Factorpermalink

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The Factor programming language combines powerful language features with a full-featured library. The implementation is fully compiled for performance, while still supporting interactive development. Factor applications are portable between all common platforms.

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Glasgow Haskell Compilerpermalink

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GHC is a state-of-the-art, open source compiler and interactive environment for the functional language Haskell.

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Gopermalink

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Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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Idrispermalink

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Idris is a general purpose pure functional programming language with dependent types and features inspired by Haskell and ML. Dependent types allow types to be predicated on values, meaning that some aspects of a program’s behaviour can be specified precisely in the type. It is compiled, with eager evaluation.

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Idris LLVMpermalink

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Idris LLVM is LLVM-based code generation for the Idris programming language.

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Juliapermalink

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Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library.

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laccpermalink

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The lcc project provides a small, self-hosting C compiler.

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Myrddinpermalink

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Myrddin is a systems programming language that covers a similar niche as C including desktop, OS, and embedded development, but at the same time making it harder to shoot yourself in the foot.

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Mythrylpermalink

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Mythryl is an SML-derived language that aims to deftly combine C speed, Lisp power, and Ruby convenience with the critical new ingredients of Hindley-Milner typing, state of the art generics, and just the right level of side effects.

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Nimpermalink

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Nim (formerly known as "Nimrod") is a statically typed, imperative programming language that tries to give the programmer ultimate power without compromises on runtime efficiency. It offers an infix/indentation based syntax with a powerful hygienic macro system, a semantic model that supports a soft realtime GC on thread local heaps, and an unsafe shared memory heap for increased efficiency.

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nwccpermalink

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Nils Weller's C Compiler, or "nwcc", is a simple C compiler for Unix systems targeting a variety of architectures.

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pForth [1]permalink

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Portable Forth, or pForth, is a public domain, portable ANS Forth based on a kernel written in ANSI C.

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picocpermalink

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PicoC is a very small C interpreter for scripting. It was originally written as a scripting language for a UAV's on-board flight system. It's also very suitable for other robotic, embedded, and non-embedded applications.

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Ponypermalink

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Pony is an open-source, object-oriented, actor-model, capabilities-secure, high performance programming language.

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Portable C Compilerpermalink

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QBEpermalink

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QBE aims to be a pure C embeddable backend that provides 70% of the performance of advanced compilers in 10% of the code. Its small size serves both its aspirations of correctness and our ability to understand, fix, and improve it. It also serves its users by providing trivial integration and great flexibility.

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Quick Cpermalink

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Quick C, written in Myrddin, is a C frontend for the QBE backend.

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Redpermalink

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Red is a homoiconic programming language strongly inspired by REBOL, with support for functional, imperative, and symbolic programming; prototype-based object support; low-level system programming; high-level scripting, including a REPL; and application embedded deployment.

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Rustpermalink

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Rust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety.

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sccpermalink

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Suckless C Compiler

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Squirrelpermalink

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Squirrel is a high level imperative, object-oriented programming language, designed to be a light-weight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.

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Steel Bank Common Lisppermalink

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Steel Bank Common Lisp (SBCL) is a high performance compiler and runtime system for ANSI Common Lisp. It provides an interactive environment including a debugger, a statistical profiler, a code coverage tool, and many other extensions.

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SubCpermalink

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SubC is a compiler for a (mostly) strict and sane subset of C as described in "The C Programming Language", 2nd Ed (also known informally as "ANSI C" or "C89").

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TenDRApermalink

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Twelfpermalink

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Twelf is a language used to specify, implement, and prove properties of deductive systems such as programming languages and logics.

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Utrecht Haskell Compilerpermalink

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UHC is the Utrecht Haskell Compiler. UHC supports almost all Haskell98 features plus experimental extensions.

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V Programming Languagepermalink

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The V programming language is a simple, fast, safe, compiled language for developing maintainable software.

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Zigpermalink

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Zig is a system programming language that prioritizes optimality, safety, and readability.

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