Archives

• Internet Archive

Art

• Gallery of Art . Emil Kren . Daniel Marx

Astronomy and Astronautics

• Encyclopedia Astronautica . Mark Wade

Libraries

• ThinkQuest Library
• Cornell University Library
• Project Gutenberg
• Online Literature Library
• On-Line Books . John Mark Ockerbloom
• eBookCult
• e.Lib
• Library of Literature
• Classics . University of Cambridge
• Biblioteca Virtual do Estudante Brasileiro . USP
• Bartleby.com
• Banned Books

Calendars

• Calendar Zone . Janice McLean

Quotations

• Provérbios, Máximas e Citações
• Wikiquote
• YourQuotations - Famous Quotes
• BrainyQuote
• Quotations . Michael Moncur

Culture

• Cultural Heritage Initiative for Community Outreach . School of Information . University of Michigan

Philosophy

• Internet Encyclopedia of Philosophy . James Fieser
• Meta-Encyclopedia of Philosophy . Andrew Chrucky
• Stanford Encyclopedia of Philosophy . Edward N. Zalta

Geography

• Multimap.com
• World Map of Time Zones
• PlacesNamed.com - Geographic Encyclopedia
• MapMachine. National Geographic
• Cyberschoolbus . UN
• China Online
• Countries.com
• BrainyAtlas
• TerraServer . Microsoft
• Perry-Castañeda Library Map Collection
• Atlas of the Orient
• BrainyGeography . USA
• LexicOrient . Middle East & North Africa
• Encyclopaedia of the Orient . North Africa & Middle East
• CountryReports.org

General

• Educypedia
• YourEncyclopedia
• Infoplease.com
• Banglapedia - National Encyclopedia of Bangladesh
• Reference Desk . Jim Martindale
• BrainyEncyclopedia
• Wikipedia
• Encyclopedia.com
• Encyberpedia

History

• História . Voltaire Schilling
• Perseus Digital Library . Gregory Crane
• Medieval and Classical Library . Douglas B. Killings
• Medieval Resources . Beau A.C. Harbin
• Labyrinth . Medieval Studies . Martin Irvine . Deborah Everhart
• HyperHistory
• HistoryNet
• Ancient World Cultures . Tony Beavers
• Women & Gender in the Ancient World . Ross Scaife
• Internet History Sourcebooks Project . Paul Halsall
• Electronic Tools and Ancient Near Archives
• BrainyHistory
• Ponteiro
• Linha do Tempo . UOL

Holism

• Free Encyclopedia of Thelema

Informatics

• Whatis
• TechEncyclopedia
• PC Technology Guide
• FOLDOC

Mathematics

• YourEncyclopedia . Mathematics
• Mathematical Atlas . Dave Rusin
• PlanetMath
• Cornell University Mathematics Library
• Educypedia
• Free Online Encyclopedia
• MathWorld . Eric W. Weisstein
• PRIME Mathematics Encyclopedia . Platonic Realms

Mythology, Folklore and Legends

• Aesop's Fables . John R. Long
• Folklore and Mythology Electronic Texts . D. L. Ashliman
• Folklore, Myth and Legend . David K. Brown
• Legends . Paula Kate Marmor
• Mithos
• Encyclopedia Mythica

Music

• Instrument Encyclopedia . CHICO

Symbols

• Symbols.com

Technology

• Tech Encyclopedia
• HowStuffWorks
• eHow

Arquivos

• Internet Archive

Arte

• Gallery of Art . Emil Kren . Daniel Marx

Astronomia e Astronáutica

• Encyclopedia Astronautica . Mark Wade

Bibliotecas

• ThinkQuest Library
• Cornell University Library
• Project Gutenberg
• Online Literature Library
• On-Line Books . John Mark Ockerbloom
• eBookCult
• e.Lib
• Library of Literature
• Classics . University of Cambridge
• Biblioteca Virtual do Estudante Brasileiro . USP
• Bartleby.com
• Banned Books

Biologia

• Atlas de Anatomia Vegetal . Jane E. Kraus . Juliana Pisaneschi

Calendários

• Calendar Zone . Janice McLean

Citações

• Provérbios, Máximas e Citações
• Wikiquote
• YourQuotations - Famous Quotes
• BrainyQuote
• Quotations . Michael Moncur

Cultura

• Cultural Heritage Initiative for Community Outreach . School of Information . University of Michigan

Filosofia

• Internet Encyclopedia of Philosophy . James Fieser
• Meta-Encyclopedia of Philosophy . Andrew Chrucky
• Stanford Encyclopedia of Philosophy . Edward N. Zalta

Geografia

• Multimap.com
• World Map of Time Zones
• PlacesNamed.com - Geographic Encyclopedia
• MapMachine. National Geographic
• Cyberschoolbus . UN
• China Online
• Countries.com
• Geografia . Departamento de Geociências . Universidade Estadual de Londrina
• BrainyAtlas
• TerraServer . Microsoft
• Perry-Castañeda Library Map Collection
• Atlas of the Orient
• BrainyGeography . USA
• LexicOrient . Middle East & North Africa
• Encyclopaedia of the Orient . North Africa & Middle East
• CountryReports.org

Gerais

• Educypedia
• YourEncyclopedia
• Infoplease.com
• Banglapedia - National Encyclopedia of Bangladesh
• Reference Desk . Jim Martindale
• BrainyEncyclopedia
• Wikipedia
• Encyclopedia.com
• Encyberpedia

História

• História . Voltaire Schilling
• Perseus Digital Library . Gregory Crane
• Medieval and Classical Library . Douglas B. Killings
• Medieval Resources . Beau A.C. Harbin
• Labyrinth . Medieval Studies . Martin Irvine . Deborah Everhart
• HyperHistory
• HistoryNet
• Ancient World Cultures . Tony Beavers
• Women & Gender in the Ancient World . Ross Scaife
• Internet History Sourcebooks Project . Paul Halsall
• Electronic Tools and Ancient Near Archives
• BrainyHistory
• Ponteiro
• Linha do Tempo . UOL

Holismo

• Free Encyclopedia of Thelema

Informática

• Whatis
• TechEncyclopedia
• PC Technology Guide
• FOLDOC

Matemática

• YourEncyclopedia . Mathematics
• Mathematical Atlas . Dave Rusin
• PlanetMath
• Cornell University Mathematics Library
• Educypedia
• Free Online Encyclopedia
• MathWorld . Eric W. Weisstein
• PRIME Mathematics Encyclopedia . Platonic Realms

Mitologia, Folclore e Lendas

• Aesop's Fables . John R. Long
• Folklore and Mythology Electronic Texts . D. L. Ashliman
• Folklore, Myth and Legend . David K. Brown
• Legends . Paula Kate Marmor
• Mithos
• Encyclopedia Mythica

Música

• Enciclopédia da Música Brasileira
• Instrument Encyclopedia . CHICO

Química

• Banco de Dados de Química . Rossetti

Símbolos

• Symbols.com

Tecnologia

• Tech Encyclopedia
• HowStuffWorks
• eHow