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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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Avianpermalink

License Reference

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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Iopermalink

License Reference

Io is a dynamic prototype-based programming language focused on expressiveness through simplicity.

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Iokepermalink

License Reference

Ioke is a folding language. It allows you to write highly expressive code that writes code. Ioke allows you to create abstractions at any level, and expressiveness is the ultimate goal of the language.

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Luapermalink

License Reference

Lua is a powerful, fast, lightweight, embeddable scripting language.

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Monopermalink

License Reference

Mono is a software platform designed to allow developers to easily create cross platform applications. It is an open source implementation of Microsoft's .NET Framework based on the ECMA standards for C# and the Common Language Runtime.

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Nekopermalink

License Reference

Neko is a high-level dynamically typed programming language that can be used as an embedded scripting language. Its VM has been designed to provide a common runtime for several different languages.

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OctaScriptpermalink

License Reference

OctaScript is a LuaJIT bytecode-compiled language with support across a wide selection of editors, created for OctaForge scripting but usable as a stand-alone language as well.

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Pharopermalink

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Pharo is a pure object-oriented programming language and a powerful environment, focused on simplicity and immediate feedback (think IDE and OS rolled into one).

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PyPypermalink

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PyPy is a fast, compliant alternative implementation of the Python language (2.7.10 and 3.2.5).

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Reiapermalink

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Reia (pronounced RAY-uh) is a Ruby-like scripting language for the Erlang virtual machine (BEAM).

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RSchemepermalink

License Reference

RScheme is an object-oriented, extended version of the Scheme dialect of Lisp that compiles to C, or to bytecode for virtual machine execution.

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Rubypermalink

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Ruby is a dynamic, open source programming language with a focus on software simplicity and developer productivity. It has an elegant syntax that is natural to read and easy to write.

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Scalapermalink

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Scala is a JVM language with seamless Java interop, type inference, class-based OOP facilities, and functional features like higher-order functions.

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Scheme 48permalink

License Reference

Scheme 48 is a bytecode interpreted implementation of R5RS designed to be used as a testbed for experiments in implementation techniques and as an expository tool.

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Squeakpermalink

License Reference

Squeak is an open-source Smalltalk programming system with fast execution environments for all major platforms. It features the Morphic framework, which promotes low effort graphical, interactive application development and maintenance.

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Squirrelpermalink

License Reference

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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V8 [1]permalink

License Reference

V8 is a JavaScript engine originally released with the Chromium browser, but it has since been widely used as a stand-alone JavaScript implementation.

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VMKitpermalink

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Wrenpermalink

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Wren is like Smalltalk in a Lua-sized package with a dash of Erlang and wrapped up in a familiar, modern syntax.

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