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Encyclopedia.com – Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with millions of articles in our FREE, online library.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, techno...

Fact Monster is a free reference site for students, teachers, and parents. Get homework help and find facts on thousands of subjects, including sports, entertainment, geography, history, biography, education, and health.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world

The largest Catholic website in the world

Free online encyclopedia of philosophy, edited by James Fieser and Bradley Dowden. Hosted by the University of Tennessee at Martin.

Wikipedia is a Web-based, free-content encyclopedia written collaboratively by volunteers and sponsored by the non-profit Wikimedia Foundation. It contains entries both on traditional encyclopedic topics and on almanac, gazetteer, and current events ...

Economics for thought. Library of economics books and articles, encyclopedia, blog, podcasts, and educational resources. Topics include markets, microeconomics, macroeconomics, free trade, economic history, biographies, and political economy. EconLo...

Bartleby.com publishes thousands of free online classics of reference, literature and nonfiction

The premier encyclopedia on mythology, folklore, and religion.