Encyclopedia Mythica
Encyclopedia Mythica: Greek People (Mythological)
Featuring the heroes, heroines, and mythical creatures from Greek legend, this site offers information on hundreds of characters, as well as etymology, pronunciation, pictures, and more.
Bartleby
Bartleby.com: Bulfinch's Mythology: The Age of Fable
Bulfinch's collection of Greek and Roman myths is available here in full text format. A little known feature of this work is its sections on Eastern mythology, Northern mythology and a section on Druid religion.