GNU-Art
GNU-Art
http://gnuart.org/english/index.html
Eprints
Eprints
http://www.eprints.org/
Iblibio
Iblibio
http://www.ibiblio.org/
Internet Archive
Internet Archive
http://www.archive.org/
Open directory project
Help build the most comprehensive human-reviewed directory of the web
http://www.dmoz.org/
Wikipedia
Wikipedia
http://www.wikipedia.org/