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.
Filter Tags
To filter the list, click either the + or - link for a given tag.
+: Clicking the + link will include only works that are tagged with that term.
-: Clicking the - link will exclude only works that are tagged with that term.
Submit Works
There are presently two ways to submit a work:
- Join the IRC channel (see community resources) and tell apotheon about the work. Make sure you provide both the address for whatever serves as an official homepage or source for the work, and the address for an authoritative source for the license terms of the project.
- Use the (temporary) measure of visiting the CopyfreeWorks repository, forking it, editing the datafile, and submitting a pull request. See the CopyfreeWorks README for more details on how to do this.
8ccpermalink
License Reference8cc 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.
License(s)
- MIT/X11 License
Tag(s)
Agdapermalink
License ReferenceAgda is a dependently typed functional programming language, and a proof assistant.
License(s)
- MIT/X11 License
Tag(s)
Alice MLpermalink
License ReferenceAlice ML is a functional programming language based on Standard ML, extended with rich support for concurrent, distributed, and constraint programming.
License(s)
- custom license
Tag(s)
CakeMLpermalink
License ReferenceCakeML is a verified REPL interpreter implementation of a significant subset of Standard ML.
License(s)
- Simplified BSD License
Tag(s)
Checked Cpermalink
License ReferenceChecked 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.
License(s)
- MIT/X11 License
Tag(s)
Cleanpermalink
License ReferenceClean 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.
License(s)
- Simplified BSD License
Tag(s)
CMU Common Lisppermalink
License ReferenceCMUCL is a high-performance, free Common Lisp implementation that runs on most major Unix platforms.
License(s)
- Revised BSD License
Tag(s)
cprocpermalink
License ReferenceBuilt 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.
License(s)
- ISC License
Tag(s)
Digital Mars Cpermalink
License ReferenceDMC, the Digital Mars Compiler, is a one-step program to compile and link C++, C and ASM files, previously known as "sc".
License(s)
- Boost License v1.0
Tag(s)
DMDpermalink
License ReferenceD 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.
License(s)
- Boost License
Tag(s)
eC [1] [2]permalink
License ReferenceThe 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.
License(s)
- Revised BSD License
Tag(s)
Epigrampermalink
License ReferenceEpigram is a dependently typed programming language and an interactive programming environment.
License(s)
- MIT/X11 License
Tag(s)
Factorpermalink
License ReferenceThe 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.
License(s)
- Simplified BSD License
Tag(s)
Glasgow Haskell Compilerpermalink
License ReferenceGHC is a state-of-the-art, open source compiler and interactive environment for the functional language Haskell.
License(s)
- Revised BSD License
Tag(s)
Gopermalink
License ReferenceGo is an open source programming language that makes it easy to build simple, reliable, and efficient software.
License(s)
- Revised BSD License
Tag(s)
HaMLetpermalink
HaMLet is a faithful and complete implementation of the Standard ML programming language (SML'97). It aims to be an accurate reference implementation of the language specification, a platform for experimentation with the language semantics or extensions to it, and a useful tool for educational purposes.
License(s)
- custom license
Tag(s)
Idrispermalink
License ReferenceIdris 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.
License(s)
- Revised BSD License
Tag(s)
Idris LLVMpermalink
License ReferenceIdris LLVM is LLVM-based code generation for the Idris programming language.
License(s)
- Revised BSD License
Tag(s)
Juliapermalink
License ReferenceJulia 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.
License(s)
- MIT/X11 License
Tag(s)
laccpermalink
License ReferenceThe lcc project provides a small, self-hosting C compiler.
License(s)
- MIT/X11 License
Tag(s)
MLtonpermalink
License ReferenceMLton is an open-source, whole-program, optimizing Standard ML compiler.
License(s)
- Python Imaging Library License (modified)
Tag(s)
Myrddinpermalink
License References
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.
License(s)
- MIT/X11 License
Tag(s)
Mythrylpermalink
License ReferenceMythryl 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.
License(s)
- SML/NJ License
Tag(s)
Nimpermalink
License ReferenceNim (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.
License(s)
- MIT/X11 License
Tag(s)
nwccpermalink
License ReferenceNils Weller's C Compiler, or "nwcc", is a simple C compiler for Unix systems targeting a variety of architectures.
License(s)
- Simplified BSD License
Tag(s)
pForth [1]permalink
License References
Portable Forth, or pForth, is a public domain, portable ANS Forth based on a kernel written in ANSI C.
License(s)
- public domain
Tag(s)
picocpermalink
License ReferencePicoC 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.
License(s)
- Revised BSD License
Tag(s)
Ponypermalink
License ReferencePony is an open-source, object-oriented, actor-model, capabilities-secure, high performance programming language.
License(s)
- Simplified BSD License
Tag(s)
Portable C Compilerpermalink
License(s)
- BSD License
Tag(s)
QBEpermalink
License ReferenceQBE 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.
License(s)
- MIT/X11 License
Tag(s)
Quick Cpermalink
License ReferenceQuick C, written in Myrddin, is a C frontend for the QBE backend.
License(s)
- MIT/X11 License
Tag(s)
Redpermalink
License References
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.
License(s)
- Revised BSD License + Boost Software License
Tag(s)
Rustpermalink
License ReferenceRust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety.
License(s)
- MIT/X11 License
Tag(s)
sccpermalink
License ReferenceSuckless C Compiler
License(s)
- ISC License
Tag(s)
SML/NJpermalink
License ReferenceStandard ML of New Jersey (abbreviated SML/NJ) is a compiler for the Standard ML '97 programming language with associated libraries, tools, and documentation.
License(s)
- SML/NJ License
Tag(s)
Squirrelpermalink
License ReferenceSquirrel 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.
License(s)
- MIT/X11 License
Tag(s)
Steel Bank Common Lisppermalink
License ReferenceSteel 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.
License(s)
- public domain
Tag(s)
SubCpermalink
License ReferenceSubC 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").
License(s)
- public domain
Tag(s)
TenDRApermalink
License(s)
- DERA Copyright License + OSF License + Revised BSD License
Tag(s)
Twelfpermalink
License ReferenceTwelf is a language used to specify, implement, and prove properties of deductive systems such as programming languages and logics.
License(s)
- Simplified BSD License
Tag(s)
Utrecht Haskell Compilerpermalink
License ReferenceUHC is the Utrecht Haskell Compiler. UHC supports almost all Haskell98 features plus experimental extensions.
License(s)
- Simplified BSD License
Tag(s)
V Programming Languagepermalink
License ReferenceThe V programming language is a simple, fast, safe, compiled language for developing maintainable software.
License(s)
- MIT/X11 License
Tag(s)
Zigpermalink
License ReferenceZig is a system programming language that prioritizes optimality, safety, and readability.
License(s)
- MIT/X11 License