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
- Forge ● 'This is an HTML5 game. It’s extremely incomplete.'
- Fortune Cookies and Nuclear War ● A game written in a paragraph.
- Fortune System Resource Document ● 'The Fortune System Resource Document includes the basic rules of the Fortune System. It also includes advice from existing Fortune System designers.'
- Four Colors al Fresco ● Play a superhero in the Italian Renaissance.
- Free as in Freedom ● A biography of free software guru Richard Stallman.
- Free Beer ● A libre recipe for beer.
- Free Beer (book) ● A book about free software and free culture from the speakers at FSCONS 2008.
- Free Culture Guide ● An Arabic guide to free culture.
- Free Fall ● 'Ramón, a taciturn 12-year-old boy, dream of becoming an astronaut when he grows up. Every night he sneaks away from home to go to his school and dive into its pool, experimenting ingravity as he gently floats, until one jump into the dark water confronts him with the reality of his illusions.'
- Free FATE ● A free, expanded version of FATE.
- Free Knowledge based on Creative Commons Licenses. Consequences, risks and side-effects of the license module 'non-commercial us ● Problems with using the NonCommercial Creative Commons licence term.
- Free! Music! Sampler ● 36 songs under Creative Commons licences.
- Free Software Song ● A song written by free software guru Richard Stallman.
- Free to Mix ● 'The guide gives you information, activities and ideas to confidently create a remix from material you know you have the rights to reuse.'
- FreeBassel Cookbook ● Cookbook made in solidarity with Bassel, a prisoner of the Syrian regime.
- FreeSouls.cc ● Photos of Joi Ito and writings from others.
- French Government ● Two French cultural websites.
- Fringe ● A half-finished RPG designed by committee.
- Frontier Encounters ● 'Frontier Encounters presents a wide range of views on how the borders between [China, Russia and Mongolia] are enacted, produced, and crossed.'
- F-Sharp ● The bare bones of FATE.
- FUBAR ● You've been screwed … and at least one person wants you dead.
- Fudge ● An early generic RPG.
- Full Circle Magazine ● A free, independent magazine for Ubuntu Linux.
- Future of Copyright ● A competition for fiction and non-fiction entries on copyright.
- Future of Copyright 2.0 ● A collection of fiction and non-fiction.
- Ganakagok Cards ● Cards for the game Ganakagok.
- Geasa ● A story telling game about fickle fairies.
- Genesys System ● A generic rules-light RPG.
- Ghost Runner ● As a Ghost Runner, you the players must track down rogue Ghosts, pulled from the afterlife and embedded into cybernetic SHELS which are used to hold these spirits to the world.
- Ghosts ● Your fantasy city is under siege. Play both the living and the dead.
- GIMP ● A program for image manipulation and creation.
- Gimp Magazine ● 'The goal of this publication is to promote GIMP and related open source software.'
- Glitch the Game ● 2D MMORPG art assets now public domain.
- Go Fast, Turn Left ● You play an alien who gets his or her kicks from speeding.
- Gods & Monsters ● An old-school style fantasy RPG.
- GORE ● A d%-based horror RPG.
- Grand OGL Wiki ● A collection of open game content, primarily for Dungeons & Dragons.
- Green Comet ● A sci-fi novel.
- Group Works ● 'A Pattern Language for Bringing Life to Meetings and Other Gatherings'
- Guess Who's a Mess ● 'Guess Who's a Mess is the third full-length Brad Sucks album. It's about dealing with other people's expectations.'
- GUMSHOE SRD ● 'The document is a reference for game designers, and is not tuned to teach the game, or provide a playable game experience.'
- Gunwave ● A system for playing the angsty teens of a mecha anime series.
- HabitRPG ● 'Gamify your life'
- Hacker Public Radio ● 'Hacker Public Radio (HPR) is an Internet Radio show (podcast) that releases shows every weekday Monday through Friday.'
- Hedgewars ● A Worms-like computer game.
- Hello_world ● A blog for three documentaries about open programming languages.
- Heroes Vs. Villains ● A collection of 'photos' of supervillains.
- Hexpack ● An expansion to the Piecepack.
- Hierarchy of Interface for Tabletop Games ● How people interact with tabletop games.
- High School Hearts ● light tabletop role-playing game of high schoolers dealing with the emotional roller-coaster of adolescence
Sources
- Open Compute Project ● 'A small team of Facebook engineers spent the past two years tackling a big challenge: how to scale our computing infrastructure in the most efficient and economical way possible.'
- Open Course Library ● 'The Open Course Library is a collection of expertly developed educational materials – including textbooks, syllabi, course activities, readings, and assessments – in 81 high-enrollment college courses.'
- Open Database Commons ● 'Open Data Commons exists to provide legal solutions for open data.'
- Open Educational Resources for Teacher Education ● The name says it all.
- Open Font Library ● A repository of libre fonts.
- Open Food Facts ● 'Open Food Facts gathers information and data on food products from around the world.'
- Open Game Art ● A community dedicated to providing art for open source video games.
- Open Knowledge Foundation ● 'We build tools and communities to promote open knowledge around the world.'
- Open Library ● A project to create one page for every book ever published.
- Open Library of the Humanities ● 'Welcome to the initial ideas hub for the Open LIbrary of Humanities (OLH): a project exploring a PLOS-style model for the humanities and social sciences.'
- Open Policy Network ● 'The mission of the Open Policy Network is to foster the creation, adoption and implementation of open policies and practices that advance the public good by supporting open policy advocates, organizations and policy makers, connecting open policy opportunities with assistance, and sharing open policy information.'
- Open Science Federation ● 'The Open Science Federation is a nonprofit alliance working to improve the conduct and communication of science.'
- Open Source Alternative ● 'Find open source software alternatives to well-known commercial software'
- Open Source Ecology ● Technology for sustainable, localised, modern living.
- Open Source Food ● A recipe website.
- Open Source Seed Initiative ● Seeds.
- OpenCorporates ● A database on corporations.
- OpenLibra ● OpenLibra "La Biblioteca Libre online que estabas esperando"
- opensource.com ● "At opensource.com, we want to show you the places where the open source way is multiplying ideas and effort, even beyond technology."
- OpenStax CNX ● A repository of OER.
- Openstax College ● 'OpenStax College offers students free textbooks that meet scope and sequence requirements for most courses.'
- OpenTextBookStore ● 'We scour the Internet for the best quality textbooks issued under open licenses that allow for printing.'
- opsound ● A collection of copyleft songs.
- O'Reilly ● A publishing company.
- Orphan Songs ● Free Swedish rock pop music.
- P2PU ● An online learning community.
- Patreon ● A funding model.
- Pelgrane Press ● An RPG publisher.
- PhiloPic ● 'PhyloPic stores free silhouette images of animals, plants, and other life forms. All images are available for reuse under a Public Domain or Creative Commons license.'
- Picdrome ● A collection of photos.
- Pixabay ● 'Find and share outstanding images'
- Pratham Books ● A publisher of multicultural and multilingual children's books.
- Prelinger Archive ● A collection of ephemeral film.
- President of Russia ● The website of the President of the Russian Federation.
- Prismatic Art Collection ● A collection of inclusive fantasy art.
- Pristine Classical ● A company that remasters public domain music.
- Project Gutenberg ● A website that preserves out-of-copyright books.
- Public Domain Review ● Reviews and catalogues of works in the public domain.
- Public Domain Super Heroes ● A wiki of superheroes and villains that have lapsed into the public domain.
- Public Domain Torrents ● Torrents for public domain movies.
- Public Knowledge ● Preserves 'the openness of the Internet and the public's access to knowledge, promotes creativity through balanced copyright, and upholds and protects the rights of consumers to use innovative technology lawfully.'
- Public Library of Science (PLOS) ● Scientific and medical knowledge shared with the world.
- Qi Hardware ● 'Qi's mission is to promote and encourage the development of copyleft hardware.'
- Qomun ● A directory of shareable works.
- Queensland University of Technology ● What it says.
- QuestionCopyright.org ● An advocacy group for copyright reform.
- Rad Geek People's Daily ● 'official state media for a secessionist republic of one.'
- Radio Nowhere ● 'Radio Nowhere is a rock/pop band from Oakland, California, in the United States. A friend told me that we sound like the missing link between Counting Crows and Duran Duran, and that sums it up pretty well.'
- Rafu ● Rafu, or Raffaele Manzo, is a game designer.
- Reddit ● The front page of the Internet.
- 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.