Copyleft

Copyleft works can be shared both in original form and after being adapted, but they must remain under the copyleft licence even if they are modified.

Copyleft licences are also called 'reciprocal', 'viral' and 'share alike' libre licences. However, whereas copyleft can only describe a libre work, the other three terms can also describe proprietary works that must be kept under the same (proprietary) licence when adapted.

Openness: Libre

Works

  • Hacker Public Radio'Hacker Public Radio (HPR) is an Internet Radio show (podcast) that releases shows every weekday Monday through Friday.'
  • HedgewarsA Worms-like computer game.
  • Hello_worldA blog for three documentaries about open programming languages.
  • High School Heartslight tabletop role-playing game of high schoolers dealing with the emotional roller-coaster of adolescence
  • Homotopy Type Theory: Univalent Foundations Of Mathematics'Homotopy type theory is a new branch of mathematics that combines aspects of several different fields in a surprising way.'
  • HyperA modular gaming system.
  • IcosahedralA role-playing game.
  • Immersion into Noise'On a planet that is increasingly technologically linked and globally mediated, how might noises break and re-connect in distinctive and productive ways within practices located in the world of art and thought?'
  • In the Shade of the CommonsAbout bridging the gaps between information societies.
  • InkscapeA vector graphics editor.
  • Inside a Star-filled SkyA recursive, infinite tactical shooter.
  • Integrity at ScaleA book proposing the Redesign Revolution.
  • Introduction to Basic Legal CitationUS legal citation.
  • Invulnerable Tabletop Super Hero Roleplaying Game'The Invulnerable RPG Year One Edition allows you to create your own hero, and experience worlds of adventure!'
  • Iridium SystemA simple and realistic system combining skills and classes.
  • Iron Edda
  • Is Behavioral Economics Doomed?'Those of you who have read about – and who has not? – the current economic crisis may wonder just how rational economic man or woman is. Behavioral economics has become the modern rage. So is rational economic man – homo economicus – dead?'
  • Is It Open Data?"We've made it easy for you to make enquiries to data holders about the openness of the material they hold — and to record publicly the results of those efforts."
  • JAGSA universal generic games system.
  • JazzA flexible and easy-to-use game system drawn from many sources.
  • Konkani Vishkawosh'Konkani Vishwakosh is a four-volume hard copy encyclopedia (3632 pages) published by Goa University; a work that took over 14 years to develop.'
  • Labyrinth LordA retroclone of Basic/Expert D&D.
  • Lamentations Of The Fire PrincessWeird fantasy role-playing.
  • Las Calles Hablan'A feature length documentary about street art in Barcelona'
  • Libre Graphics MagazineA magazine focused on GIMP, Inkscape and other open source graphics software — as well as the art created from that software.
  • LibrebusA project to raise awareness of libre.
  • Light And Matter'This is an introductory text intended for a one-year introductory course of the type typically taken by biology majors, or for AP Physics B.'
  • LinvixA Spanish language Linux magazine.
  • List of Open Source ProgramsList of Open Source Programs for Windows
  • littleBits'An opensource library of electronic modules that snap together with tiny magnets for prototyping and play'
  • Living Room'Living room is a musical stop-motion short film about the secret musical life of a group of chewing gums.'
  • LobsterAn extensive font designed to flow seamlessly.
  • Lunatics"Lunatics is a story about the first permanent settlement off of the Earth, in a tiny colony on the Moon near Sinus Iridium."
  • Magic SwordA project to clone and improve upon D&D 4E.
  • Magpie CodexA light and generic fantasy RPG.
  • Masks'Masks is a pen-and-paper role-playing game of super powered heroes, with addictive character generation and comic-book combat pacing.'
  • Mazes & Perils'Mazes & Perils is a game of imagination and role playing in a fantasy world, suitable for ages 10 and up.'
  • MediaGoblin'MediaGoblin is a free software media publishing platform that anyone can run. You can think of it as a decentralized alternative to Flickr, YouTube, SoundCloud, etc.'
  • Men of StonesThis is a game of drama, of desires, motivations, and downfalls.
  • Men Of Stones'This is a game of drama, of desires, motivations, and downfalls. You play characters caught up in a devastating circle of events that can lead only to a tragic fall.'
  • Microlite20A simplified version of the d20 System.
  • MidgardPlay a viking hero on epic adventures.
  • Mimi and EuniceA webcomic which often covers copyright-related issues.
  • Mini SixA short and sweet take on the d6 System.
  • MonkStoryA simple HTML5 game made for the Liberated Pixel Cup.
  • MULRAHAn RPG that has undergone considerable changes in recent versions.
  • MurderHobos"MurderHobos gets to the meat of dungeon crawling: killing things and taking their stuff."
  • Mutant FuturePost-apocalyptic role-playing compatible with Labyrinth Lord.
  • Mutants & MastermindsA d20 superhero RPG.
  • MyPaintA simple graphics program.

Sources

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  • Basic Dungeons & DragonsThe mechanics of original and basic D&D.
  • CC-PROA rebranding of the CC BY-SA licence to emphasise its value to professionals.
  • d20 SystemThe roleplaying system which first appeared in Dungeons & Dragons 3E.
  • FATEA game system based on the mechanic: dice roll + invoked and tagged Aspects.
  • Liberated Pixel Cup"Liberated Pixel Cup is a two-part competition: make a bunch of awesome free culture licensed artwork, and then program a bunch of free software games that use it."
  • Saga Machine'Saga Machine is a brand new tabletop role-playing system by the Tab Creations Collective.'
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