wikipedia.org
ENCYCLOPEDIA: We are building an open-content encyclopedia in many languages. We started in January 2001 and are now working on 251,595 articles in the English version.
rook.org
Our Medieval Heritage, the 11th - 15th Centuries in Northern Europe
COLLEGE & UNIVERSITY SITES:
Georgetown University
The Labyrinth:
Resources for Medieval Studies
Sponsored by Georgetown University
McGill University
Western Medieval Society: includes library links and links to other sites on this topic.
Washington State University
Resources include a timeline, reader, glossary, gallery, and directory of Internet resources for the study of Europe in the Middle Ages.