The Paleolithic Continuity Theory on Indo-European Origins
- A major site presenting a very unorthodox view of Indo-European origins. Many scholarly papers; many links.
- http://www.continuitas.com/index.html

Indo-European Studies
- Collection of links to sites and books dealing with Indo-European studies.
- http://www.centrostudilaruna.it/indoeuropei.html

WordGumbo: Comparative Indo-European
- An interesting hodge-podge of pages on various branches and individual member languages of the Indo-European family. There are vocabularies of "lesser-known" languages, and links to major on-line dictionaries of better-known ones.
- http://www.wordgumbo.com/ie/cmp/

TITUS - Thesaurus Indogermanischer Text- und Sprachmaterialien
- Collection of scholarly material devoted to Indo-European linguistics, from the Institute of Comparative Linguistics of the Johann Wolfgang Goethe-Universität, Frankfurt am Main, and related institutions [Multilingual site, incl. English-language materia
- http://titus.uni-frankfurt.de/indexe.htm

The Indo-European Mailing List
- Web-searchable archives of a mailing list devoted to the discussion of Indo-European linguistics and archaeology.
- http://listserv.linguistlist.org/archives/indo-european.html

Indo-European Home Page
- Links to various projects involving the Indo-European language, maintained by Dr. Deborah W. Anderson, Dept. of Linguistics, UC Berkeley.
- http://www.indo-european.org/

IE Documentation Centre
- Website devoted to Indo-European linguistics and culture, from the University of Texas at Austin.
- http://www.utexas.edu/cola/depts/lrc/iedocctr/ie.html

Knowing Words in Indo-European
- Exploration of the etymology of words related to the word "know" in the Indo-European languages.
- http://www.friesian.com/cognates.htm