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Tweets (*)
pr *
  • How Stuff Works
  • www.howstuffworks.com
  • Contains tutorials on a wide range of subjects for people interested in learning the mechanisms of how things work.
5.0
(6)
>50
8
  • Information Please
  • www.infoplease.com
  • Online dictionary, Columbia Encyclopedia, and almanac reference.
4.6
(si*)
>540
7
  • Bartleby.com
  • www.bartleby.com
  • Etexts, focusing on classics and general reference works.
4.6
(si*)
>110500
8
  • Hutchinson Encyclopedia
  • encyclopedia.farlex.com
  • "A subset of the content (concise set) is provided for free, the access to the rest of the Hutchinson Encyclopedia requires subscription."
4.6
(si*)
>170
7
  • HighBeam Encyclopedia
  • www.encyclopedia.com
  • Offers articles from the Columbia Encyclopedia and Britannica Concise Encyclopedia.
4.6
(si*)
<5
8
  • Simple English Wikipedia
  • simple.wikipedia.org
  • User-contributed online encyclopedia intended for people whose first language is not English.
4.6
(si*)
<5
7
  • Online Encyclopedia
  • encyclopedia.jrank.org
  • Offers articles from on the 11th edition Encyclopedia Britannica, and from the Crystal Reference Encyclopedia. All articles are searchable and alphabetized.
4.1
(si*)
>70
6
  • Encyclopaedia Britannica Online
  • www.britannica.com
  • Provides selected articles for free, full text with search capabilities, multimedia and related links for subscribers.
4.0
(4)
>590
8
  • World Book Encyclopedia
  • www.worldbook.com
  • Online version of the complete reference work along with dictionary, atlas, links, magazines, historical documents, audio, video, images, and 3D photographs. Requires free temporary registration with option to buy continued access for full articles.
3.7
(1)
>30
6
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