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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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.NET Corepermalink

License Reference

.NET Core is a cross-platform, general purpose, modular, managed code software development framework, consisting of the open source Common Language Infrastructure, including both the CoreFX implementation of the Framework Class Library and the Common Language Runtime.

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Agdapermalink

License Reference

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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Apricotpermalink

License Reference

Apricot is a programming language inspired by Clojure and Lisp that runs on the Rubinius VM. Apricot code is compiled to Rubinius bytecode which allows it to call Ruby functions directly (and vice versa).

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AsyncScriptpermalink

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AsyncScript is an experimental language for asynchronous programming, based on actor model.

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Avianpermalink

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Avian is a lightweight virtual machine and class library designed to provide a useful subset of Java’s features, suitable for building self-contained applications.

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Buckaroopermalink

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Buckaroo is a package manager for C++ using Buck as its build system and Git for dependency tracking.

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Cpermalink

License Reference

With the C shell script, you can compile and execute C "scripts" in one go!

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Cabalpermalink

License Reference

Cabal (Common Architecture for Building Applications and Libraries) is a system for building and packaging Haskell libraries and programs. It defines a common interface for package authors and distributors to easily build their applications in a portable way.

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CakeMLpermalink

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CakeML is a verified REPL interpreter implementation of a significant subset of Standard ML.

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Capuchinpermalink

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Capuchin is a JavaScript implementation for the Rubinius VM.

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ChakraCorepermalink

License Reference

ChakraCore is the core part of the Chakra JavaScript engine that powers Microsoft Edge.

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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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Chibi-Schemepermalink

License Reference

Chibi-Scheme is a very small library intended for use as an extension and scripting language in C programs. The default language is R7RS Scheme, with support for all libraries.

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CHICKENpermalink

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Clangpermalink

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clib [1]permalink

License Reference

The clib toolset provides a package manager with package listing "registry" for the C programming language, also serving as a nice way to discover small utilities and libraries.

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CMU Common Lisppermalink

License Reference

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

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