List of Online Encyclopedias

The Canadian Encyclopedia
The Canadian Encyclopedia is available in both English and French and includes about 14,000 articles in each language on a wide variety of subjects including history, popular culture, events, people, places, politics, arts, First Nations, sports and science.

Infoplease Encyclopedia
Thousands of articles from the Columbia Encyclopedia, 6th ed.

Digital Universe
Digital Universe is a project to create a network of portals to provide high-quality information and services open to the public.

Scholarpedia
Scholarpedia includes articles on general subjects such as: computational neuroscience, dynamical systems, computational intelligence, physics and astrophysics.

Wikipedia
Wikipedia is available in many languages. It includes articles on Arts, Biography, Geography, History, Mathematics, Science, Society, Technology.

Encyclopedia of Mathematics
The Encyclopedia of Mathematics is a large reference work in mathematics.

MathWorld
MathWorld is an online mathematics reference work, created and largely written by Eric W. Weisstein, Ph.D.

ScienceWorld
Scienceworld is also a project created by Eric W. Weisstein, Ph.D. It includes articles on Mathematics, Biography, Physics, Chemistry, Astronomy.

Stanford Encyclopedia of Philosophy
The Stanford Encyclopedia of Philosophy (SEP) is a freely-accessible online encyclopedia of philosophy maintained by Stanford University.

Encyclopedia Astronautica
The Encyclopedia Astronautica is a reference web site on space travel. A comprehensive catalogue of vehicles, technology, astronauts, and flights, it includes information from most countries that have had an active rocket research program.

Encyclopedia of Earth
The Encyclopedia of Earth (abbreviated EoE) is an electronic reference about the Earth, its natural environments, and their interaction with society.