Libre works can be shared both in original form and after being adapted, though there may be some conditions on their use.
There are a number of different definitions of libre, including the Open Definition and the Definition of Free Cultural Works
No matter what the definition, libre content can be shared and adapted by any person for any purpose, including commercial purposes. The only requirements are minor, and include attribution (you need to give credit to those whose work you're using) and copyleft (if you use the content in your own work, your work has to be under the same licence as the content you use).
Subcategories:
Works
- 100 CC BY Hits ● A hundred libre songs.
- 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.'
- 365 Sketches ● A blog with a new sketch each day.
- 4C System ● A supers retroclone.
- 4SRD ● A project to closely clone D&D 4E.
- 6d6 RPG ● A 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 Glossary ● A 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 Spark in Fate Core ● 'This is an expansion of the (soon to be) award winning Fate Core, focussing on the process of collaborative world building. It includes some of the concepts found in The Spark RPG and helps you build an engaging setting with a history, fraught with danger and potential for growth.'
- A Survey about Copyright in the Digital Age ● A survey about people's conception of copyright.
- A Vessel For Offering ● 'Hard boiled pseudo-Lovecraftian space noir with squishy (and doomed, of course) romantic bits.'
- A World of Fire and Sand ● A freeform game. The author says "I got so excited by the Dark Sun campaign setting‘s calendar that I wrote a totally different"
- Abulafia ● A collection of random concept and word generators for story gamers.
- Accessibility, Sustainability, Excellence ● '[R]ecommends a programme of action to enable more people to read and use the publications arising from research.'
- 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."
- AdventureLand ● 'AdventureLand is a small, 4 pages RPG [written] in a hurry (about 6 hours) for advanced role-players.'
- 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 Patrol ● Retro-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.'
- Aerogel.org ● '[A]n encyclopedic reference about aerogels, how-to guides for making aerogels and building a do-it-yourself supercritical dryer, the world's most comprehensive aerogel image gallery, a podcast with the world's leading aerogel scientists, and more.'
- AfterImage ● A game where you try to prevent an apocalypse.
- Against Intellectual Property ● 'Kinsella [argues] that the very existence of patents are contrary to a free market, and adds in here copyrights and trademarks too.'
- Alchemy ● An electronic sketching program.
- Alchemy System ● A 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."
- AncientBeast ● Awesome Turn Based Strategy. Master Your Beasts!
- Anima Prime ● A fast-paced RPG inspired by manga and anime.
- Animalball Melee ● A simplified d20 System for gladiatorial combat.
- Arcemu ● Arcemu is an MMORPG server framework project which currently supports World of Warcraft 3.3.5a
- Archaeology, Anthropology, and Interstellar Communication ● "Addressing a field that has been dominated by astronomers, physicists, engineers, and computer scientists, the contributors to this collection raise questions that may have been overlooked by physical scientists about the ease of establishing meaningful communication with an extraterrestrial intelligence."
- Arkfall ● A World of Dungeons hack that allows you to play post-apoc sci-fi.
- 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 Grow ● Small Toad – youngest student of Master Iron Willow – gave the rarest tea flower in Master Iron Willow's considerable collection to a passing beauty.
- Astral Dreams ● A space opera miniatures wargame.
- Atlas of Living Australia ● 'The Atlas of Living Australia (Atlas) contains information on all the known species in Australia aggregated from a wide range of data providers: museums, herbaria, community groups, government departments, individuals and universities.'
- Aural Tradition ● An album created as part of a copyright course.
- Australian Budget 2012-2013 ● The federal government budget and budget overview for 2012-2013.
- Australian Census 2011 ● 'Census DataPacks contain comprehensive data about people, families and dwellings for all available geographic areas, with associated Geographic Information System digital boundary files.'
- Australian Government Intellectual Property Manual ● Government guidelines for implementing 'open licensing'.
- AutoWar ● Tabletop Game set in a wastland with cars
- Awen ● A fantasy RPG.
- Baba Yaga's Dancing Hut ●
- Backswords & Bucklers ● Fantasy dungeoncrawling in Elizabethan England.
Sources
- 1KM1KT ● A host of gratis role-playing games.
- 4uPress ● A crowdsourced newspaper/
- 500px ● A site for photographs.
- Aaron Pogue ● A fantasy author.
- Adobe ● An IT company.
- Aelius Blythe ● A fiction author.
- Against Monopoly ● A blog on intellectual property.
- Al Jazeera ● CC-licensed, media-quality footage.
- Alderon's Tower ● Chris Gonnerman's website.
- Alfonse Maria Mucha: The Complete Works ● A collection of artworks of the Art Nouveau artist.
- Amagi Games ● A game company which publishes libre tabletop games and supplements.
- Animalball Partners ● A website that hosted tabletop games.
- Appropedia ● A wiki to share designs of all sorts.
- Arduino ● Embedded development platform
- Argofox ● Royalty free music.
- Art Passions ● Collections of public domain artworks by dead artists.
- Artikid ● "[A]n Italian full-time web-developer, part-time illustrator and games geek."
- audionautix ● Free production music.
- Australian Digital Alliance ● An Australian body providing a 'balanced voice' in copyright discussions.
- Australian Electoral Commission ● The government body that supervises and manages elections.
- Australian Government ● The government of the Commonwealth of Australia.
- Authors Alliance ● 'The Authors Alliance embraces the unprecedented potential digital networks have for the creation and distribution of knowledge and culture. We represent the interests of authors who want to harness this potential to share their creations more broadly in order to serve the public good.'
- Bandcamp ● Creative Commons-licensed albums.
- Bedroom Wall Press ● 'Designer of Hulks and Horrors, Heaven's Shadow, and Drums of War.'
- Behance ● A site that hosts artists portfolios.
- Berengad Games ● A publisher of story games.
- Beyond Belief Games ● Swords & Wizardry ports.
- Bill Brown ● A designer and artist.
- Bill Browne ● RPG creator.
- Blend Swap ● 'Proudly the greatest repository of open source blends on the Tubes.'
- Blender Foundation ● Creators of the 3D graphics/video software Blender and films using Blender.
- Brad Sucks ● "a one man band with no fans"
- Brent P Newhall ● A NASA web developer and game designer.
- British Library ● The British Library.
- Brothers Whim ● A Creative Commons book publisher.
- Burningwell ● Public domain images (mostly photographs)
- ccMixter ● ccMixter is a site for Creative Commons remixes. You can listen to the music, but also sample and mash-up it.
- CCTRAX ● A collection of CC albums.
- Center for the Study of Innovative Freedom ● Anti-IP libertarian blog from Stephen Kinsella.
- Center For The Study Of The Public Domain ● A center at Duke Law School.
- Chris Sakkas ● A fan of free culture.
- Circus Divas ● Art from a perverted circus. Some nudity and violence.
- Comic Book Plus ● Gratis public domain comics.
- CommentHow.com ● Step-By-Step DIY Tutorials for any of the world's almost 7,000 languages.
- Commonly ● A site to ransom CC0 game assets.
- Commonwealth of Learning ● An organisation which encourages the sharing of research, knowledge and technology.
- Communia ● 'The Association’s mission is to educate about, advocate for, offer expertise and research about the public domain in the digital age within society and with policy-makers.'
- 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.'
- Connexions ● An open education repository.
- CopySouth Research Group ● A group of researchers seeking to reveal the negative impact of copyright on the Global South.
- Basic Dungeons & Dragons ● The mechanics of original and basic D&D.
- @ccess ● An OKFN project to encourage libre open access.
- CC-PRO ● A rebranding of the CC BY-SA licence to emphasise its value to professionals.
- d20 System ● The roleplaying system which first appeared in Dungeons & Dragons 3E.
- FATE ● A 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."
- LibrePlanet Gaming Collective ● The LibrePlanet Gaming Collective is a group of free software activists organized around their enthusiasm for video games.
- Rusałka ● A "GMless game of tragic fairy tales"
- Saga Machine ● 'Saga Machine is a brand new tabletop role-playing system by the Tab Creations Collective.'
- The First 100 Days of Government ● The Abbott Liberal Government's assessment of what it has achieved in its first 100 days.
- The Public Domain Game Jam ● A competition to create a game inspired by the public domain.
- The Public Domain Manifesto ● A statement on the value of the public domain.
- Who Needs Access? You Need Access ● An OKFN project to increase open access.