A good, if rather brief, overview of the Proto-Indo-European language, with outlines of some of its daughter branches. The author is Marisa Lohr, a Research Fellow at Trinity College, University of Cambridge (England).

Ambitious project based at the Leiden University (The Netherlands). It contains etymological data for some individual Indo-European (IE) languages, as well for some branches of the family.

Authors: Thomas V. Gamkrelidze and V. V. Ivanov. (Scientific American, March 1990). Article by two well-known linguists, presenting a controversial theory about the origin and development of the IE languages.

Detailed description of the archaeological findings associated with the "Kurgan culture", a 5th-3th millennium BC civilization north of the Black Sea, whose inhabitants are widely thought to have been the speakers of Proto-Indo-European (PIE). Includes a partial reconstructed PIE word list.

Survey of the author's ideas about Proto Indo-European phonetics and grammar.

A light-hearted discussion of Indo-European and other linguistics topics, from the staff in the Linguistics Program at Bucknell University (Lewisburg, PA, USA).

Site under constant development by staff of the Department of Comparative Linguistics at Leiden University (The Netherlands). Brief description of Proto-Indo-European and of its branches. The site contains a very extensive Bibliography, classified by branch and language.

Basic overview of the Indo-European language family, with particular attention to its major members. From the College of Liberal and Fine Arts (COLFA) at the University of Texas at San Antonio.

Article by Indo-European scholar Calver Watkins, providing a survey of Indo-European linguistics, and how this field of study sheds light on the homeland of the first speakers of Indo-European. [From The American Heritage Dictionary of the English Language, Fourth Edition, 2000].