History of the English Language http://ebbs.english.vt.edu/hel/hel.html
A considerable collection of online materials related to the history of English: texts, publications, fonts and course syllabuses. Includes Pre-History, Old English, Middle English, early Modern English and the spread of English beyond the British Isles.
Indin http://www.geocities.com/valentyn_ua/
Independent investigations into the history of the Indo-European languages and peoples (by Valentyn Stetsyuk). Includes Turkic and Finno-Ugric material.
Sergei Starostin's Etymological Databases http://starling.rinet.ru/Intrab.htm
Currently comprise North Caucasian, Sino-Tibetan, Yenisseian, Altaic, Chukchee-Kamchatkan, Dravidian, and (partly) Semitic (proto-) languages. With reconstructed protoforms (including intermediary) and the attested forms in daughter tongues for each etymon. Downloadable, searchable. Need special fonts, also available onsite.