Accelerando! - A novel by Charles Stross. Fast forwards a not-so-average family through three generations and into a future in which humans seem far more alien than any critters from outer space.
Berklee Shares - Free music lessons, mp3, QuickTime and pdf files from Berklee College of Music. Studies of contemporary music.
CC Mixter - A community music sharing site featuring songs licensed under Creative Commons, where you can listen to, sample, mash-up, or interact with music in whatever way you want.
Classical Archives - Includes thousands of files (MIDI, MP3, and Windows Media Audio) from over 1000 composers.
Common Content - Directory of web sites and resources licensed under Creative Commons licenses, sorted by subject.
Connexions - Rice University's course material available for distribution and reuse.
Creative Commons - A non-profit organization which designs legal and technological tools to allow creators to license their works in more accessible ways than standard licenses. Their family of licenses allow creators to keep their copyrights but allow people to copy and distribute that work provided they give proper credit. Through an online form a creator can also specify other conditions that cover such issues as commercial usage, modifications, and jurisdiction of disputes.
Cylinder Preservation and Digitization Project - A digital collection of recordings held by the University of California at Santa Barbara. Includes searchable database, history of cylinder recordings, and donation information.
Dimension Music - MP3 portal with information, news (and user comments), reviews, a search engine and legal MP3 downloads.
Distributed Proofreaders - Web-based method of sharing the work involved in the creation of Project Gutenberg etexts. Volunteers proofread scanned books online page by page.
Folklore and Mythology Electronic Texts - Vast collection of folktales, myths, legends, and texts pertaining to folklore, arranged by title and theme, with a focus on northern and western Europe.
Free Nature Pictures - Pictures of beaches, forests, deserts, animals, and flowers. [Creative Commons]
Gnomoradio - Music sharing, playback, and recommendation program for Creative Commons licensed songs. Gnomoradio is free, open source software for Linux/UNIX systems.
Hans Christian Andersen: Fairy Tales and Stories - English translation includes original illustrations by Vilhelm Pedersen and Lorenz Frølich. Includes texts of more than 100 of Andersen's tales.
The Libre Society - Concerned with exploring the intersections between critical thought, technology, art and transformative practice. Provides a shared socio-technical field for artistic, cultural, intellectual and political production that is free for use and reuse (copyleft).
The Literature Network - Searchable online classic literature, poems, and quotes. Essays & Summaries. Books by famous authors. Author Biography's. Literature Quotes.
Loca Records - An electronica and post-rock record label. Creativity requires that musicians reappropriate and reinterpret music and sounds to enable them to create truly innovative music. The fight over Free/Libre and Open Content and Media is a struggle over the freedom of expression and the freedom of speech, radically opening up the possibilities of media. To this end LOCA is releasing music under so-called copyleft, a license that enables music writers to develop music collaboratively and equitably and then release it into the commons.
Magnatune - Internet-based record label that encourages downloading of all its music, from genres such as classical, world, heavy metal, rock and electronica.
Meatball Wiki - Meatball Wiki aspires to be a community of communities: an intercommunity or metacommunity. A teaching and learning community of the leaders of online communities--their proprietors, developers, and mentors.
Mutopia - Open-source sheet music in PDF, PS, and GNU LilyPond formats. Mostly classical, with a little jazz.
Open Course Ware - Contains a sample of MIT courses, offering an early look at the content and design of OCW.
OpenPhoto - Hundreds of stock photos licensed for free commercial and non-commercial use.
Opsound - Features a pool of Creative Commons licensed audio. You may submit your MP3s.
Prelinger Collection at the Internet Archive - Nonprofit online resource containing 1,125 archival films on American life, culture, industry, and institutions, all available for free downloading and reuse.
Project Gutenberg - A huge archive of e-texts created by volunteers. Index of texts available, newsletters, articles, and information on volunteering.
Public Knowledge - Washington, D.C.-based public interest advocacy organization dedicated to promoting the public interest in access to information. Advocates a fair and balanced approach to copyright and technology policy.
Public Library of Science - A non-profit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.
SoundClick.com - MP3 downloads and streaming ASF songs (and videos). Stars and unsigned artists. Charts, radios, band and song information. Bands get their own pages.
StockXchng - Collection of free stock images, collected and uploaded by the users.
Thingiverse - Digital designs for physical objects. Downloadable files for building with lasercutter, 3D printer, or other automated fabrication machines.
voip-info - Has good docs for asterick among other things.
wikibooks - Non-profit developing free, open content textbooks, manuals and other texts.
wikipedia - A free-content collaborative encyclopedia started in January 2001.
wiktionary - A collaborative project to produce a free multilingual dictionary in every language, with definitions, etymologies, pronunciations and quotations.