To save everybody reinventing the wheel: for Latin texts the best listing (linking to Perseus or LacusCurtius — that's me — or other sites for each text) is David Camden's Forum Romanum
; for Greek, Peter Gainsford's LATO
although he hasn't maintained it comprehensively in a coupla years. Attalus.Org
fills the Greek gap to some extent — and is otherwise a very good site; and Livius
is an excellent site, reliable information by a professional historian, covering a lot of ancient Greece, especially Alexander the Great, as well as the ancient Middle East — Babylonia, Persia, Parthia, ancient Libya, etc. For Antiquity, almost anything online can be either found on, or linked on, one of these six sites.