Copyfree: Unfetter your ideas.

Copyfree Software

This page is a work in progress, and includes copyfree or public domain software choices organized alphabetically by category:

• Cryptography
• Database
• Entertainment
• Graphics
• Inferno/P9 Software
• Media Player
• Network Client
• Office Tool
• Operating System
• Parsers
• Programming Language Implementation or Environment
• Security Tool
• Server
• Terminal Emulator, Multiplexer, or Shell
• Text Tool
• Version Control
• Web/XML Browser
• Web Content Management
• Window Manager
• X Tool
• Other

The license status listed for each piece of software is the "primary" license under which it is distributed. In several cases, parts of the software package may be distributed under other licenses -- potentially even non-copyfree licenses, as in the case of all BSD Unix items currently in the Operating System category, which at minimum include the GNU Compiler Collection.

Cryptography

• axTLS: Revised BSD License (note: text matches Revised BSD License; format differs)

• Mechiel Lukkien's DES: public domain

• Mechiel Lukkien's SHA2: public domain

• netpgp: BSD License

• OpenPGP SDK: BSD License

• OpenSSH: BSD License

• pgpdsa: public domain

• Tom Zerucha's OpenPGP: BSD License

Database

• libpqxx: Revised BSD License

• PostgreSQL: BSD License

• Redis: Revised BSD License (reference)

• SOCI: Boost License

• SQLite: public domain

Entertainment

• CUBE: zlib License (reference)

• Cube 2: Sauerbraten: zlib License (reference)

• Monster 2: Revised BSD License (reference)

• oldrunner: Simplified BSD License

Graphics

• ANGLE: Simplified BSD License

• Irrlicht: zlib License (reference)

• Simple DirectMedia Layer: zlib License

Inferno/P9 Software

• cryptfile: public domain

• dhcpd: public domain

• ircfs: public domain

• ftpserv: public domain

• hdict: public domain

• hgfs: public domain

• hgweb: public domain

• http: public domain

• torrent: public domain

• nfssrv: public domain

• nopoint: public domain

• pdfread: public domain

• playfs: public domain

• scgid: public domain

• shttpd: public domain

• ssh: public domain

• textmangle: public domain

• ventisrv: public domain

• web: public domain

• webdavfs: public domain

• zipfs: public domain

Network Client

• BitchX: Revised BSD License (reference)

• ii: MIT/X11 License

• jab: Open Works License

• rbot: MIT/X11 License

• samblah: public domain

• sic: MIT/X11 License

• transmission-cli: MIT/X11 License

• wpa_supplicant: Revised BSD License (reference)

Media Player

• herrie: BSD License

Office Tool

• calcurse: Simplified BSD License

• newsbeuter: MIT/X11 License

• Raggle: MIT/X11 License (reference)

• S5: public domain

Operating System

• AerieBSD: BSD licenses and ISC License

• Contiki: Revised BSD License (reference)

• DesktopBSD: BSD License

• DragonFly BSD: BSD License

• FreeBSD: BSD License

• Minix 3: Minix 3 License (reference)

• NetBSD: BSD License

• OpenBSD: BSD licenses and ISC License

• PC-BSD: BSD License

• ROS: Revised BSD License (reference)

• Xv6: MIT/X11 License

Parsers

• Sundown: ISC License (reference)

• Upskirt: ISC License (reference)

Programing Language Implementation or Environment

• ANTLR: BSD License

• Berkeley Yacc: public domain

• CHICKEN: Revised BSD License (reference)

• CMU Common Lisp: public domain

• Cobra: [MIT/X11 License)(http://copyfree.org/licenses/mit/license.txt) ([reference](http://cobra-language.com/source/))

• Cocotron: MIT/X11 License

• Factor: Simplified BSD License (reference)

• Gauche: BSD License

• Go: Revised BSD License (reference)

• Glasgow Haskell Compiler: BSD License

• Hugs: BSD License

• IrrRPG Builder: MIT/X11 License (reference)

• JQuery: MIT/X11 License

• LLVM: University of Illinois/NCSA Open Source License (reference)

  Selected LLVM projects:

  • Clang: University of Illinois/NCSA Open Source License (reference)

  • LLDB: University of Illinois/NCSA Open Source License (reference)

  • VMKit: University of Illinois/NCSA Open Source License (reference)

• Logo3D: ISC License

• Lua: MIT/X11 License

• MochiKit: MIT/X11 License

• Portable C Compiler: BSD License

• Reia: MIT/X11 License

• Rubinius: Revised BSD License (reference)

• Ruby: Simplified BSD License (reference)

• Ruby on Rails: MIT/X11 License

• Rust: MIT/X11 License (reference)

• Scala: BSD License

• Scheme 48: BSD License

• Sizzle: Multi-Licensed MIT/X11 License or Revised BSD License

• Squeak: MIT/X11 License

• Squirrel: MIT/X11 License

• Steel Bank Common Lisp: public domain

• TenDRA: BSD License (defunct)

• TinyScheme: BSD License

• V8: BSD License

• Yasm: BSD License

• Ypsilon Scheme: BSD License

Security Tool

• Armitage: Revised BSD License (reference)

• getlessmail: Open Works License

• isspam: Open Works License

• scmail: Revised BSD License (reference)

Server

• AppScale: Simplified BSD License (reference)

• authsrv9: public domain

• Hato: Revised BSD License

• Kyuba: MIT/X11 License (reference)

• lighttpd: Revised BSD License (reference)

• memcached: Simplified BSD License (reference)

• memventi: public domain

• mlmmj: MIT/X11 License

• Nginx: Simplified BSD License (reference)

• qmail: public domain

• ShairPort: MIT/X11 License (reference)

Terminal Emulator, Multiplexer or Shell

• dvtm: MIT/X11 License

• mlterm: Simplified BSD License

• scsh: BSD License

• tmux: BSD License

Text Tool

• Acme: Lucent Public License

• AkelPad: BSD License

• Diakonos: MIT/X11 License

• EMACS clones:

  • mg: public domain

• less: Simplified BSD License

• Notepad2: Revised BSD License

• Programmer's Notepad: Simplified BSD License

• proofread: Open Works License

• Sam: Lucent Public License

• SciTE: Historical Permission Notice and Disclaimer

• vi clones:

  • nvi: BSD License

Version Control

• Fossil: BSD License

Web/XML Browser

• Abaco: Lucent Public License (reference)

• Chromium: BSD License

• Iron: BSD License

• OWB: BSD License

• Shiira: BSD License

• Sunrise: BSD License

• Surf: MIT/X11 License (reference)

• w3m: MIT/X11 License (reference)

• X-Smiles: HUT/X-Smiles License (reference)

• xxxterm: ISC License

Web Content Management

• CLiki: MIT/X11 License

• diri: MIT/X11 License

• jekyll: MIT/X11 License (reference)

• Lump: Open Works License (reference)

• rump: Open Works License

• Serendipity: BSD License

• SMF: Revised BSD License with warranty disclaimer separated (reference)

• Squib: MIT/X11 License

• Textpattern: BSD License

• TiddlyWiki: BSD License

• WackoWiki: BSD License

• werc: public domain

Window Manager

Special thanks are due Giles Orr and his Comprehensive List of Window Managers for Unix for making a lot of the work in compiling this list easy.

• AHWM: AHWM License

• AntiWM: MIT/X11 License

• Blackbox: MIT/X11 License

• Bluetile: BSD License

• Compiz: MIT/X11 License

• dvtm MIT/X11 License

• dwemo: MIT/X11 License

• dwm: MIT/X11 License

• dwm-gtx: MIT/X11 License

• echinus: MIT/X11 License

• euclid-wm: BSD License

• Enlightenment: BSD License

• Fluxbox: MIT/X11 License

• Golem X11 WM: BSD-style License

• i3: BSD License

• Lucca WM: MIT/X11 License

• phluid: BSD License

• Qtile: MIT/X11 License

• Scrotwm: ISC License

• spook: MIT/X11 License

• TAL/wm: MIT/X11 License

• TinyWM: public domain

• whimsy: public domain

• WMFS: BSD License

• wmi: MIT/X11 License

• wmii: MIT/X11 License

• XD640: BSD License

• xmonad: BSD License

X Tool

• dmenu: MIT/X11 License

• feh: BSD License

• lsw: MIT/X11 License

• metalock: MIT/X11 License (reference)

• scrot: BSD License

• slock: MIT/X11 License

Other

• AMANDA: AMANDA License (reference)

• Ganglia: BSD License (reference)

• Joytran: MIT/X11 License (reference)

• LIBSVM: Revised BSD License (reference)

• pcpustat: Open Works License

• remindwhen: Open Works License

• TclMon: BSD License (reference)