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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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A Tutorial On Pointers And Arrays In C [1] [2]permalink

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A Tutorial On Pointers And Arrays In C by Ted Jensen (the programmer, not the music recording engineer) is intended to introduce pointers to beginning programmers in the C programming language, explained in plain language with lots of examples.

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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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Automated Testing Frameworkpermalink

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ATF, or Automated Testing Framework, is a collection of libraries to write test programs in C, C++, and POSIX shell.

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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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bdd-for-cpermalink

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The bdd-for-c project provides a BDD (behavior driven development) library for the C programming language.

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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

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With the C shell script, you can compile and execute C "scripts" with one simple command.

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Cabalpermalink

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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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Capuchinpermalink

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Capuchin is a JavaScript implementation for the Rubinius VM.

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cconspermalink

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The goal of ccons is to provide an interactive console for the C programming language, similar to what irb is for Ruby.

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Cellopermalink

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Cello is a library that brings higher level programming to C by acting as a modern, powerful runtime system, making things previously impractical or awkward in C easier.

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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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Chibi-Schemepermalink

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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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CINTpermalink

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CINT is a C and C++ interpreter with built-in debugger and class browser.

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clib [1]permalink

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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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Clingpermalink

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Cling is an interactive C++ interpreter, built on the top of LLVM and Clang libraries.

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cloudlibcpermalink

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Nuxi CloudABI is an application binary interface for UNIX-like operating systems built around the concept of capability-based security, and cloudlibc is a standard C library built on top of CloudABI. It implements almost all features of the C11 standard, but also a large part of POSIX.1-2008.

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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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CocoaPodspermalink

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CocoaPods is the dependency manager for Swift and Objective-C Cocoa projects; it manages dependencies for your Xcode projects. It has over ten thousand libraries and can help you scale your projects elegantly.

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Cocotronpermalink

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CoffeeScriptpermalink

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CoffeeScript is a little language that compiles into JavaScript. Underneath that awkward Java-esque patina, JavaScript has always had a gorgeous heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way.

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Composerpermalink

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Composer is a dependency manager that helps you declare, manage and install dependencies of PHP projects, ensuring you have the right stack everywhere.

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Conan.iopermalink

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Conan.io is a distributed, open source package manager.

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CPMpermalink

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CPM is a package manager for C++ based on CMake and Git.

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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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Emscriptenpermalink

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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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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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Ficlpermalink

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Ficl is a programming language interpreter designed to be embedded into other systems as a command, macro, and development prototyping language. Ficl is an acronym for "Forth Inspired Command Language".

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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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Gauchepermalink

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Gauche is an R7RS Scheme implementation developed to be a handy script interpreter, which allows programmers and system administrators to write small to large scripts for their daily chores. Quick startup, built-in system interface, and native multilingual support are some of its goals.

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Godot [1]permalink

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Godot is a fully featured, open source, copyfree licensed game engine. It focuses on having great tools and a visual oriented workflow that can export to PC, Mobile, and Web platforms with no hassle. The editor, language, and APIs are feature rich, yet simple to learn, allowing you to become productive in a matter of hours.

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gpspermalink

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The Go Package Solver is an engine for tackling dependency management problems in Go. It is trivial -- about 35 lines of code -- to replicate the fetching bits of go get using gps.

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GW-BASICpermalink

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GW-BASIC is the old Microsoft implementation of the BASIC programming language interpreter for MS-DOS.

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Hugspermalink

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Hugs 98 is a functional programming system based on Haskell 98, the de facto standard for non-strict functional programming languages. Hugs 98 provides an almost complete implementation of Haskell 98

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Huiapermalink

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Huia is a whitespace-aware dynamic language with a simple object model based around traditional inheritance and closures.

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imguipermalink

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Immediate Mode Graphical User Interface, or imgui, is a bloat-free UI library for C++ with minimal dependencies.

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Iopermalink

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

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Iokepermalink

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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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Isabellepermalink

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Isabelle is a generic proof assistant. It allows mathematical formulas to be expressed in a formal language and provides tools for proving those formulas in a logical calculus.

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Janetpermalink

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Janet is a functional and imperative programming language and bytecode interpreter, that makes a good system scripting language, or a language to embed in other programs. It is a modern lisp, but lists are replaced by other data structures (arrays, tables (hash table), struct (immutable hash table), tuples). The language also supports bridging to native code written in C, meta-programming with macros, and bytecode assembly.

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JasmineIopermalink

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Jasmine.Io is an Io Language port of the popular Behavior Driven Development testing framework for JavaScript with a similar name.

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Jeeves [1]permalink

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Jeeves is a programming language for automatically enforcing privacy policies. We have implemented it as an embedded domain-specific language in Python.

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Jeeves In Haskell [1]permalink

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Jeeves is a programming language for automatically enforcing privacy policies. This implementation was built in Haskell.

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Jsipermalink

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Jsi is a javascript interpreter with file/OS support and extensions for WebSocket, Sqlite, MySql, and more; sub-interpreter and introspection facilities; a web framework; and a debugger (command-line and Web-GUI). It also supports types and defaults.

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Kittenpermalink

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Kitten is a statically typed, stack-based functional programming language designed to be simple and fast. It is a concatenative language, combining aspects of imperative and pure functional programming.

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Kyuapermalink

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Kyua is a testing framework for infrastructure software, originally designed to equip BSD-based operating systems with a test suite. This means that Kyua is lightweight and simple, and that Kyua integrates well with various build systems and continuous integration frameworks.

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Lambrapermalink

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Lambra is an experiment to implement a functional, distributed Lisp on the Rubinius Virtual Machine, much à la Erlang.

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libbsdpermalink

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The libbsd library provides useful (and often more secure) functions commonly found on BSD Unix systems, and lacking on others, making it easier to port projects with BSD Unix origins without needing to embed the same code. It includes code under a number of copyfree licenses, plus some function manpage documentation under (non-copyfree) 4-clause "Original" BSD License terms.

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Logo3Dpermalink

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This project presents an implementation of the turtle graphics system originally developed for the Logo programming language developed at MIT by Seymour Papert.

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Luapermalink

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

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Lupinpermalink

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Lupin is an implementation of Lua for the Rubinius VM.

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Mirandapermalink

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Miranda is a pure, non-strict, polymorphic, higher order functional programming language. A simpler language than Haskell, it inspired some of the design of that language.

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mkshpermalink

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The MirBSD Korn Shell (mksh) is an actively developed free implementation of the Korn Shell programming language and a successor to the Public Domain Korn Shell (pdksh).

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Monopermalink

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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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MoonScriptpermalink

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MoonScript is a programmer friendly language that compiles to Lua.

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mrubypermalink

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Ruby creator Matsumoto Yukihiro's mruby is the lightweight, embeddable implementation of the Ruby language complying with part of the ISO standard.

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Nekopermalink

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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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Nicklepermalink

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Nickle is a programming language based prototyping environment with powerful programming and scripting capabilities. It supports a variety of datatypes, especially arbitrary precision numbers.

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Noscriptpermalink

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Noscript is an object-oriented, prototype-based language inspired by JavaScript, CoffeeScript, Self, IO, and our beloved Ruby.

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Nuklearpermalink

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Nuklear is a minimal state graphical user interface single header toolkit written in ANSI C and licensed under public domain with no dependencies. Instead of providing a layered library that tries to abstract over a number of platform and render backends it only focuses on the actual UI.

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Nuklear.nimpermalink

Nuklear.nim is a wrapper for the Nuklear GUI library in the Nim programming language.

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OctaScriptpermalink

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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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okshpermalink

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Portable OpenBSD ksh, or oksh, is based on pdksh.

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Onyxpermalink

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Onyx is a powerful stack-based, multi-threaded, interpreted, general purpose programming language similar to PostScript. It can be embedded as an extension language similarly to ficl (Forth), guile (scheme), librep (lisp dialect), s-lang, Lua, and Tcl.

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Opalpermalink

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Opal is a source-to-source Ruby to JavaScript compiler, with a corelib and runtime implementation.

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OpenFPGApermalink

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Overtonepermalink

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Overtone is an open source, Clojure-based audio environment and toolkit designed to explore new musical ideas from synthesis and sampling to instrument building, live-coding, and collaborative jamming

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Papertpermalink

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Papert is a Logo implementation that runs in your browser.

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particles.jspermalink

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The particles.js library creates graphical particle effects.

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pdkshpermalink

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PD-ksh is a clone of the AT&T Korn shell. At the moment, it has most of the ksh88 features, not much of the ksh93 features, and a number of its own features.

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Pegaruspermalink

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Pegarus is, broadly, an implementation of LPEG on Rubinius. LPEG implements a Parsing Expression Grammar using a parsing machine rather than the Packrat algorithm.

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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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Poisonpermalink

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Poison is an interpretation of Potion on the Rubinius language platform.

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PowerShellpermalink

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PowerShell Core is a cross-platform (Windows, Linux, and macOS) automation and configuration tool/framework that works well with your existing tools and is optimized for dealing with structured data (e.g. JSON, CSV, XML, etc.), REST APIs, and object models. It includes a command-line shell, an associated scripting language and a framework for processing cmdlets.

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Processing.jspermalink

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Pure Datapermalink

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Pure Data (aka Pd) is an open source visual programming language. Pd was created to further the Max paradigm by extending data processing to applications other than audio and MIDI, such as real-time video and web interaction.

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PureScriptpermalink

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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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Quicklisppermalink

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Quicklisp is a library manager for Common Lisp. It works with your existing Common Lisp implementation to download, install, and load any of over 1,200 libraries with a few simple commands.

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Racket [1]permalink

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Racket is a programming language with similarities to the Scheme (Lisp) family and a past close relationship to it, which specializes in education (ex. SICP, etc), metaprogramming / language design, and creation of higher-level domain-specific languages.

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Rasppermalink

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Rasp is an implementation of VBScript running on the Rubinius VM. It is "untested, undocumented, and ill-advised".

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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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rock [1]permalink

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The rock compiler is the reference implementation of ooc, a small programming language with a clear and concise syntax that compiles to C99.

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RSchemepermalink

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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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RubyGemspermalink

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RubyGems.org is the Ruby community’s gem hosting service. Instantly publish your gems and install them. Use the API to interact and find out more information about available gems.

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sbtpermalink

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Scala Build Tool (sbt) is a build tool for Scala, Java, and more. Use Scala to define your tasks, then run them in parallel from the shell.

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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

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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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scshpermalink

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Scsh is an open-source Unix shell embedded within Scheme, running on all major Unix platforms. It is a variant of Scheme 48 designed for writing real-life standalone Unix programs and shell scripts.

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Sglibpermalink

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Sglib is a C library defining useful macros for manipulating common data structures.

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Sonic Pipermalink

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Sonic Pi is a music synthesis programming language, simple enough for computing and music lessons, but powerful enough for professional musicians.

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Sprypermalink

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Spry is a programming language primarily inspired by Smalltalk, Rebol, Lisp, JavaScript, Forth, and Nim.

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Squeakpermalink

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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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SqueakJSpermalink

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SqueakJS executes Squeak in a web page without a plugin. It is a fully capable virtual machine implemented in pure JavaScript running unmodified Squeak images. Squeak is a modern implementation of Smalltalk, the original dynamic object-oriented programming environment. It runs bit-identically on virtually any platform, and now in the web browser, too.

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stbpermalink

The stb project provides a collection of single-file public domain libraries for C/C++.

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Symepermalink

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Syme is an implementation of Newspeak on the Rubinius VM. Newspeak is a programming language in the Smalltalk/Self tradition.

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Tclpermalink

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Tcl (Tool Command Language) is a very powerful but easy to learn dynamic programming language, suitable for a very wide range of uses, including web and desktop applications, networking, administration, testing and many more.

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TinyJSpermalink

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TinyJS aims to be an extremely simple (~2000 line) JavaScript interpreter, meant for inclusion in applications that require a simple, familiar script language that can be included with no dependencies other than normal C++ libraries.

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TinySchemepermalink

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TinyScheme is a lightweight Scheme interpreter that implements as large a subset of R5RS as was possible without getting very large and complicated. It is meant to be used as an embedded scripting interpreter for other programs. A lot of functionality in TinyScheme is included conditionally, to allow developers freedom in balancing features and footprint.

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Typhonpermalink

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Typhon is twisted Python, a Python implementation for the Rubinius VM, "just for fun".

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Ur/Webpermalink

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Ur/Web is the Ur statically typed functional programming language, plus a special standard library. It supports dynamic web applications backed by SQL databases. The standard library signature is such that well-typed Ur/Web programs "don't go wrong" in a very broad sense.

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V8 [1]permalink

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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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Wenyan [1]permalink

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Wenyan, or 文言, is an esoteric programming language that closely follows the grammar and tone of classical Chinese literature. Moreover, the alphabet of wenyan contains only traditional Chinese characters and 「」 quotes, so it is guaranteed to be readable by ancient Chinese people.

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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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Yabasicpermalink

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Yabasic is a traditional BASIC interpreter that comes with goto and various loops, and allows you to define subroutines and libraries. It supports simple graphics and printing. Yabasic can call out to libraries written in C, and allows you to create standalone programs.

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Yasmpermalink

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Yasm is a complete rewrite of the NASM assembler under the Revised BSD License.

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Ypsilon Schemepermalink

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Ypsilon is the implementation of Scheme Programming Language, which conforms to the latest standard R6RS* established in September 2007. Ypsilon achieves a remarkably short GC pause time and the best performance in parallel execution as it implements "mostly concurrent garbage collection", which is optimized for the multi-core CPU system.

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Zshpermalink

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Zsh is a shell designed for interactive use, although it is also a powerful scripting language. Many of the useful features of bash, ksh, and tcsh were incorporated into zsh; many original features were added.

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