The Indo-European Etymological Dictionaries Online (IEDO) reconstructs the lexicon for the most important languages and language branches of Indo-European. It is a rich and voluminous online reference source for historical and general linguists. Subscription includes: Etymological dictionary of the Armenian inherited lexicon ; Etymological dictionary of the Baltic inherited lexicon ; Etymological dictionary of proto-Celtic ; Old Frisian etymological dictionary ; Etymological dictionary of proto-Germanic ; Etymological dictionary of Greek ; Etymological dictionary of the Hittite inherited lexicon ; Etymological dictionary of the Iranian verb ; Etymological dictionary of Latin and the other Italic languages ; Cuneiform Luvian lexicon ; Etymological dictionary of proto-Nostratic ; Etymological dictionary of the Slavic inherited lexicon ; A dictionary of Tocharian B ; Materials for an etymological database of North Lechitic dialects; and, Mediae Latinitatis Lexicon Minus Online.