Ancient Commentators on Aristotle
Ancient Science Portal
Bryn Mawr Classical Review
Commentaria in Aristotelem Graeca et Byzantina
Corpus Medicorum Graecorum / Latinorum
Internet Archive
JSTOR
Learning Modern Greek in Athens
Perseus (Ancient Texts)
Plato Society
Répertoire des sources philosophiques antiques
Stanford Encyclopaedia of Philosophy
The Internet Encyclopedia of Philosophy
Thesaurus Linguae Graecae
Virtual tour in ancient Athens (5th century BC)