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

  • 100/3 RPG'A percentile RPG on a single page where player characters consist of 3 attributes (Violence, Elegance and Intelligence), a profession, a one-sentenced description of their wishes and weaknesses and two hit points (body and insanity).'
  • 13th Age'This is the home of the 13th Age / Archmage Engine system reference document. It contains all the open content from the 13th Age RPG – the Archmage Engine.'
  • 2012 Libre Gift Guide'A list of libre things that one might enjoy receiving from one's acquaintances at upcoming gift-giving occasions.'
  • 2013 Open Source Calendar'Featuring all your favourite Open Source Heroes and Heroines, these are some of the people who have done most to exemplify or further the cause of a more open, collaborative or more freedom-conscious approach to working, thinking and licensing.'
  • 4SRDA project to closely clone D&D 4E.
  • 6d6 RPGA universal RPG.
  • A Byte Of Python'"A Byte of Python" is a free book on programming using the Python language. It serves as a tutorial or guide to the Python language for a beginner audience.'
  • A Free, Libre & Open GlossaryA definition of terms like 'open source', 'crowdsourcing', 'gratis' and 'shareable content'.
  • A Mathematical Way To Think about Biology'A mathematical way to think about biology comes to life in this lavishly illustrated video book.'
  • A Survey about Copyright in the Digital AgeA survey about people's conception of copyright.
  • Achieving Impossible Things'Six "impossible things": GNU/Linux, Wikipedia, the Creative Commons, the Blender Foundation, Open Hardware, and the OLPC/Sugar project. All created under free licenses for everyone to use, in defiance of our conventional ideas of business economics. Is it magic, coincidence, or just plain common sense at work here?'
  • Action! System"The Action! System Core Rules provide all of the basic rules necessary to create and play a role-playing game. Create adventures and characters based on your favorite movies, TV shows or novels."
  • Adventurer Conquerer King System'Autarch's Adventurer Conqueror King System fulfills the promise of the original fantasy role-playing game by providing comprehensive, integrated support for play across all levels of a campaign.'
  • Adventures Of The Space PatrolRetro-Cute Sci-Fi Role-Playing
  • Adventures on Dungeon Planet'Adventures on Dungeon Planet is a science fantasy supplement for the award-winning role-playing game Dungeon World.'
  • AfterImageA game where you try to prevent an apocalypse.
  • AlchemyAn electronic sketching program.
  • Alchemy SystemA modified d20 game set in its own universe.
  • All Right to Copy?'"All Right to Copy?" is a resource designed to teach students about copyright, and how it impacts them as both users and creators.'
  • An Anarchist FAQ'This web page holds an anarchist FAQ. Its aim is to present what anarchism really stands for and indicate why you should become an anarchist.'
  • An Open World"This collection offers some of the most enpowering stories from our open source community—and perhaps you could be in the next edition."
  • AncientBeastAwesome Turn Based Strategy. Master Your Beasts!
  • Anima PrimeA fast-paced RPG inspired by manga and anime.
  • Animalball MeleeA simplified d20 System for gladiatorial combat.
  • ArcemuArcemu is an MMORPG server framework project which currently supports World of Warcraft 3.3.5a
  • Army Brats"Welcome to Fort Biloxi. Your parents have sent you to military school to "help you focus". What could be scarier than military school? How about being one of the new kids? Luckily, you have a cunning plan. You and the other new kids (the other players) are going to try to get expelled so you can go back to public school with all your friends."
  • As The Tea Leaves GrowSmall Toad – youngest student of Master Iron Willow – gave the rarest tea flower in Master Iron Willow's considerable collection to a passing beauty.
  • Astral DreamsA space opera miniatures wargame.
  • Backswords & BucklersFantasy dungeoncrawling in Elizabethan England.
  • Balloon Mapping Kit'Once assembled, this kit -- developed by community researchers from the Public Laboratory for Open Technology and Science -- enables you to collect your own aerial photos from up to 1000 ft.'
  • Basic Fantasy Role-Playing GameA fusion of Basic D&D with D&D 3E to create a simple, light-weight game.
  • Battle for Wesnoth'The Battle for Wesnoth is a Free, turn-based tactical strategy game with a high fantasy theme, featuring both single-player, and online/hotseat multiplayer combat.'
  • Beast HuntersTattooed hunters of beasts use their fiendish blood for sorcery.
  • Big IslandA game where you protect island inhabitants from skeletons.
  • Biodigital'Biodigital is a novel, first published as an Ebook via Unglue.it, about a Silicon Valley tech genius/messiah and the quasi-religious cult of transhumanist computer designers and brain hackers who follow him.'
  • Blender'Blender is the free open source 3D content creation suite'
  • Bloody ForksA LARP about the French and American battles before the War of Independence. 11 players.
  • Blue RoseA d20-based RPG.
  • BoundlessTextbooks.
  • Brigandine'Brigandine is a 28mm skirmish-level fantasy wargame that aims for speed and simplicity.'
  • Bulletproof Blues'Welcome to Bulletproof Blues: a "rules light" superhero roleplaying game set in the universe of Kalos Comics.'
  • Cap & TradeA game to teach people about carbon pricing.
  • Card StoriesA Dixit-like multiplayer online game.
  • Cardenio's Daughter"Cardenio has a problem. He seems to be slipping between realities."
  • Cascade FailureLife in a post-apocalyptic future.
  • CatastroikaA documentary about privatisation.
  • CCHits'Where you make the charts'
  • CirceOne of the first games to be open source.
  • Code'cyberspace has no “nature.” It only has code-the software and hardware that make cyberspace what it is. That code can create a place of freedom-as the original architecture of the Net did-or a place of oppressive control. '
  • Code SchoolLearn to program.
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Sources

  • 4uPressA crowdsourced newspaper/
  • AdobeAn IT company.
  • Animalball PartnersA website that hosted tabletop games.
  • AppropediaA wiki to share designs of all sorts.
  • ArduinoEmbedded development platform
  • Artikid"[A]n Italian full-time web-developer, part-time illustrator and games geek."
  • Bedroom Wall Press'Designer of Hulks and Horrors, Heaven's Shadow, and Drums of War.'
  • Berengad GamesA publisher of story games.
  • Beyond Belief GamesSwords & Wizardry ports.
  • Bill BrowneRPG creator.
  • Blend Swap'Proudly the greatest repository of open source blends on the Tubes.'
  • Blender FoundationCreators of the 3D graphics/video software Blender and films using Blender.
  • Brad Sucks"a one man band with no fans"
  • Brothers WhimA Creative Commons book publisher.
  • ccMixterccMixter is a site for Creative Commons remixes. You can listen to the music, but also sample and mash-up it.
  • Center For The Study Of The Public DomainA center at Duke Law School.
  • Circus DivasArt from a perverted circus. Some nudity and violence.
  • Commonwealth of LearningAn organisation which encourages the sharing of research, knowledge and technology.
  • Comunes'Comunes is a non-profit collective dedicated to facilitating the use of free/libre web tools and resources to collectives and activists alike, with the hopes of encouraging the Commons.'
  • Crystal ObeliskA collection of resources for medieval study and tabletop gaming.
  • D101 GamesA small press RPG company.
  • dados.gov.brA portal to the Brazilian government's open data.
  • Daniel BautistaA musician.
  • dati.camera.itData from the Italian Parliament.
  • David K LevineAn author.
  • David RevoyDavid Revoy is a fantasy artist who has worked on the Blender movie projects.
  • DelubrumThe designer's own fonts and links to others.
  • DesuraA Steam-like computer game platform.
  • Doug WhitfieldA free culture advocate.
  • Emily C O'Leary
  • Engage 2012A video-making competition.
  • EngineerGuy.com'Bill Hammack's Video & Audio on Engineering'
  • Evil Hat ProductionsA small press RPG company.
  • Evil Mad Scientist Shop'DIY and open source hardware for art, education, and world domination.'
  • FarmSubsidy.org'The European Union spends around €55 billion a year on farm subsidies. This website helps people find out who gets what, and why.'
  • FiclyA site of microfiction where you can add sequels and prequels to the writing of others.
  • Folger Shakespeare Library' This database offers access to tens of thousands of high resolution images from the Folger Shakespeare Library, including books, theater memorabilia, manuscripts, and art.'
  • Free GamerA blog of open source games.
  • Free Software DirectoryDetails of almost 7,000 free software projects.
  • Freedom PornRadical, 'ethical' porn created by amateurs.
  • FreeLabA 'technical support collective for freedom oriented intentional communities'
  • Goblinoid GamesA publisher of retro-style tabletop games.
  • GoodSemesterA place to share class notes.
  • Grand OGL WikiA collection of open game content from other sources.
  • Gratis GamesA provider of free retroclones.
  • Green Ronin PublishingAn RPG publisher.
  • Greg ChristopherAn author of RPGs.
  • Hack the BellsA competition to remix the carillion in UC Berkeley.
  • hananmiseryA musician.
  • Hungry LucyA band that blends pop, haunting vocals and other styles.
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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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