Настроение:

Россия, возродись!

этимологическая база в сети
По наводке

Куча этимологических словарей индоевропейской семьи языков:
http://www.indo-european.nl/cgi-bin/main.cgi?root=leiden

Indo-Aryan inherited lexicon [Lubotsky] view | query | description
Albanian inherited lexicon [Demiraj] view | query | description
Old Frisian etymological database (the evidence of R1) [Boutkan] view | query | description
Slavic inherited lexicon [Derksen] view | query | description
A dictionary of Tocharian B [Adams] view | query | description
Rgvedic word concordance [Lubotsky] view | query | description
Rgveda view | query | description
Avesta view | query | description
Bibliography view | query | description
Lycian lexicon [Melchert] view | query | description
Cuneiform Luvian lexicon [Melchert] view | query | description
Vedic Concordance [Bloomfield] view | query | description
A Dictionary of the Iranian Verb [Cheung] view | query | description
Indogermanisches etymologisches Woerterbuch [Pokorny] view | query | description
Griechisches etymologisches Woerterbuch [Frisk] view | query | description
Baltic inherited lexicon [Derksen] view | query | description
Etimologicheskij slovar' russkogo jazyka [Vasmer] view | query | description
Greek etymological dictionary [Beekes] view | query | description
Old Norse etymological database [Koebler] view | query | description
Gothic etymological database [Koebler] view | query | description
Old Frisian etymological database [Koebler] view | query | description
Old High German etymological database [Koebler] view | query | description
Litauisches etymologisches Woerterbuch [Fraenkel] view | query | description
A Phrygian etymological database (in progress) [Lubotsky] view | query | description
An etymological lexicon of Proto-Celtic (in progress) [Matasovic] view | query | description

Several databases search

---

Ещё словари:

http://starling.rinet.ru/cgi-bin/main.cgi?root=/usr/local/share/starling/morpho&morpho=0

Ozhegov's dictionary view | query | description
Zalizniak's dictionary view | query | description
Vasmer's Etymological Dictionary view | query | description

Several databases search

---

Ещё по наводке:
The academic Dictionary of the Lithuanian language
http://www.lkz.lt/startas.htm
The dictionary contains about a million words, the intention of the compilers being to include all the available Lithuanian lexis, including dialects and Old Lithuanian texts.