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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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Agdapermalink

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

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Apricotpermalink

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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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Capuchinpermalink

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Capuchin is a JavaScript implementation for the Rubinius VM.

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ChakraCorepermalink

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

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CHICKENpermalink

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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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Cobrapermalink

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Cobra is an object oriented .NET/Mono based programming language with clean, high-level syntax, and support for both static and dynamic binding.

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CoffeeScriptpermalink

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CoffeeScript is a little language that compiles into JavaScript. It attempts to expose the good parts of JavaScript in a simple way.

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Duktapepermalink

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Duktape is an embeddable JavaScript engine, easy to integrate into a C or C++ project, with a focus on portability and compact footprint.

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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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ez-schemepermalink

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This is a simple educational scheme interpreter that runs on ruby 1.9.* or rubinius. Source code is easy to read and understand.

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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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Fancypermalink

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Fancy is a self-hosted general-purpose programming language inspired by Smalltalk, Ruby, Io and Erlang that runs on the Rubinius VM. It has first-class integration support with Ruby and any Ruby libraries supported by Rubinius, including most C-extensions. Fancy is a dynamic, pure object-oriented, class-based programming language with built-in support for futures and actors.

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Faypermalink

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Fay is a proper subset of Haskell that compiles to JavaScript, with fundamental datatypes based on what JavaScript can support, a foreign function interface to JavaScript, and support for calling Fay from JavaScript.

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Fubypermalink

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Fuby is a hybrid functional/object-oriented programming language with the same syntax as Ruby, although pretty different semantics in many aspects.

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