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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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.
axTLSpermalink
License(s)
- Revised BSD License
Tag(s)
BearSSLpermalink
License ReferenceBearSSL is an implementation of the SSL/TLS protocol (RFC 5246) written in C.
License(s)
- MIT/X11 License
Tag(s)
Bitcoin-Qtpermalink
License ReferenceBitcoin is an innovative payment network and a new kind of money, and this is a GUI Bitcoin wallet application.
License(s)
- MIT/X11 License
Tag(s)
Bitcoindpermalink
License ReferenceThis project provides the reference implementation for a Bitcoin library, daemon, and command-line wallet.
License(s)
- MIT/X11 License
Tag(s)
btcdpermalink
License ReferenceAs an alternative full-node implementation of the bitcoin protocol written in Go, btcd provides an alternative to bitcoind that can substantially improve the diversity and resilience of the bitcoin ecosystem and infrastructure.
License(s)
- ISC License
Tag(s)
calccrypto/OpenPGPpermalink
License ReferenceThis calccrypto implementation of OpenPGP is a toy/educational implementation of the RFC 4880 standard.
License(s)
- MIT/X11 License
Tag(s)
Coinpunkpermalink
License ReferenceLicense(s)
- Simplified BSD License
Tag(s)
dcrctl [1]permalink
License ReferenceThe dcrctl client is used to control dcrd and dcrwallet daemons, providing the command line interface for both Decred node and wallet functionality.
License(s)
- ISC License
Tag(s)
dcrd [1]permalink
License ReferenceDecred is a blockchain-based cryptocurrency with a strong focus on community input, open governance, and sustainable funding for development, utilizing hybrid proof-of-work and proof-of-stake mining to ensure small groups cannot dominate transaction flow or control development without community input, and dcrd is the node daemon.
License(s)
- ISC License
Tag(s)
dcrwallet [1]permalink
License ReferenceThe dcrwallet daemon handles wallet functionality decoupled from user interface and automation development, providing an RPC interface for multiple UIs.
License(s)
- ISC License
Tag(s)
decrediton [1]permalink
License ReferenceThe decrediton wallet is a cross-platform GUI Decred front end for the dcrwallet daemon on the back end.
License(s)
- ISC License
Tag(s)
Demoncryptpermalink
License ReferenceDemoncrypt is a lightweight C++ wrapper around some of the more common crypto routines in Crypto++. It is the open source crypto layer used in the closed source demonsaw privacy tool.
License(s)
- MIT/X11 License
Tag(s)
ethereum-rubypermalink
License ReferenceThe ethereum-ruby project provides a simple Ruby library for Ethereum, and exposes deployed contracts as Ruby classes. It depends on a running Ethereum node with IPC support.
License(s)
- MIT/X11 License
Tag(s)
EthereumHpermalink
License ReferenceEthereumH is a tool written in Haskell to allow you to connect to the Ethereum blockchain.
License(s)
- Revised BSD License
Tag(s)
EthereumJpermalink
License ReferenceEthereumJ is a pure-Java implementation of the Ethereum protocol.
License(s)
- MIT/X11 License
Tag(s)
I2Ppermalink
License ReferenceThe I2P network provides strong privacy protections for communication over the Internet. Many activities that would risk your privacy on the public Internet can be conducted anonymously inside I2P.
License(s)
- public domain + MIT/X11 License + Simplified BSD License
- GPL
Tag(s)
Note(s)
Several noncritical components (I2Psnark, Susidns, and Susmail) are strictly GPLed, and they are bundled with the default install package. The rest of the standard I2P system uses a tangled web of alternate licenses, where the options are such that all those components can be accepted under copyfree terms.
i2pdpermalink
License ReferenceI2P (Invisible Internet Protocol) is a universal anonymous network layer, and i2pd (I2P Daemon) is a full-featured C++ I2P client implementation. All communications over I2P are anonymous and end-to-end encrypted; participants don't reveal their real IP addresses.
License(s)
- Revised BSD License
Tag(s)
keybase clientpermalink
License ReferenceThis is the keybase client repository. It includes the Go library and command line client, the Keybase service code, and clients for Android, iOS, Linux, MacOS, and MS Windows. It also contains packaged versions of clients for various OSes.
License(s)
- Revised BSD License
Tag(s)
keybase libwebpermalink
License ReferenceThis is a library for building web clients for keybase.
License(s)
- Revised BSD License
Tag(s)
LibHydrogenpermalink
License ReferenceLibHydrogen is a lightweight, secure, easy-to-use crypto library for constrained environments.
License(s)
- ISC License
Tag(s)
liboqspermalink
License ReferenceThe Open Quantum Safe (OQS) project has the goal of developing and prototyping quantum-resistant cryptography, and liboqs is an open source C library for quantum-resistant cryptographic algorithms.
License(s)
- MIT/X11 License
Tag(s)
libsodiumpermalink
License ReferenceLicense(s)
- ISC License
Tag(s)
libtomcryptpermalink
License ReferenceLibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.
License(s)
- public domain
- WTFPL
Tag(s)
Litecoinpermalink
License(s)
- MIT/X11 License
Tag(s)
lwe-frodopermalink
License ReferenceLWE-Frodo (lwe-frodo) is a C cryptographic library for post-quantum key exchange based on the learning with errors (LWE) problem. It is based on the paper "Frodo: Take off the ring! Practical, quantum-secure key exchange from LWE."
License(s)
- MIT/X11 License
Tag(s)
Makopermalink
License ReferenceMako is a from-scratch bitcoin reimplementation, written in "almost-C89" (i.e. it can be compiled by a C89 compiler if <stdint.h> is available -- no other C99 features are used).
License(s)
- MIT/X11 License
Tag(s)
Mechiel Lukkien's DESpermalink
License(s)
- public domain
Tag(s)
Mechiel Lukkien's SHA2permalink
License(s)
- public domain
Tag(s)
NaClpermalink
License ReferenceNaCl is an easy-to-use high-speed software library for network communication, encryption, decryption, signatures, etc. Its goal is to provide all of the core operations needed to build higher-level cryptographic tools.
License(s)
- public domain
Tag(s)
Nethereumpermalink
License ReferenceNethereum is a .NET integration library for Ethereum, allowing you to interact with Ethereum clients like eth, geth, or parity using RPC.
License(s)
- MIT/X11 License
Tag(s)
netpgppermalink
License(s)
- BSD License
Tag(s)
OpenPGP SDKpermalink
License(s)
- BSD License
Tag(s)
OpenSSHpermalink
License(s)
- BSD License
Tag(s)
pgpdsapermalink
License(s)
- public domain
Tag(s)
psshpermalink
License ReferenceThe pssh package provides parallel versions of OpenSSH tools, including parallel SSH (pssh), parallel SCP (pscp), parallel rsync (prsync), parallel nuke (pnuke), and parallel slurp (pslurp). It also includes psshlib for use in custom applications.
License(s)
- Revised BSD License
Tag(s)
pyethapppermalink
License ReferenceBased on the pyethereum library, pyethapp is the python based client implementing the Ethereum cryptoeconomic state machine.
License(s)
- MIT/X11 License
Tag(s)
pyethereumpermalink
License ReferenceThe pyethereum project provides a Python core library for Ethereum.
License(s)
- MIT/X11 License
Tag(s)
RbNaClpermalink
License ReferenceLicense(s)
- MIT/X11 License
Tag(s)
Slow KDFpermalink
License ReferenceSlow KDF provides serious key stretching based on Scrypt. This addresses the fact that popular cryptographic tools have laughable key stretching functionality.
License(s)
- MIT/X11 License
Tag(s)
Tom Zerucha's OpenPGPpermalink
License(s)
- BSD License
Tag(s)
Torpermalink
License ReferenceLicense(s)
- Revised BSD License
Tag(s)
World Citizenshippermalink
License ReferenceThe World Citizenship project offers tools for managing globally orientated citizenship with private passport services using available cryptographic tools.
License(s)
- CC0