With millions of websites out there, I'm determined to put a list together of the best Greek & Roman Mythology links available on the web. I encourage people to let me know of other ones so I can keep the list alive. Other than Wikipedia, here are the best sites that I've found thus far:
General Guides & Research Sites
Theoi Greek Mythology
The aim of the project is to provide a comprehensive, free reference guide to the gods (theoi), spirits (daimones), fabulous creatures (theres) and heroes of ancient Greek mythology and religion.
Godchecker's Mythology Encyclopedia currently features over 2,850 deities (not just Greek & Roman).
Browse the pantheons of the world, explore ancient myths, and discover Gods of everything from Fertility to Fluff with the fully searchable Holy Database Of All Known Gods.
A site dedicated toward Greek Mythology. Myths, folklore and stories of the Olympians, Titans, and some of the greatest heroes. In the other sections of Classics Unveiled, you can find information on Roman History, Roman Life and Latin Vocabulary and Derivatives.
Classical Myth: The Ancient Sources
This site is designed to draw together the ancient texts and images available on the Web concerning the major figures of Greek and Roman mythology. For University of Victoria students, but a good guide of where to look for specific myths in literature and art.
Perseus Digital Library
The Perseus Classics collection began as an integrated collection of materials, textual and visual, on the Archaic and Classical Greek world. The collection contains extensive and diverse resources including primary and secondary texts, site plans, digital images, and maps. Art and archaeology catalogs document a wide range of objects: over 1,500 vases, over 1,800 sculptures and sculptural groups, over 1,200 coins, hundreds of buildings from nearly 100 sites and over 100 gems.
The Internet Classics Archive
441 works of classical literature by 59 different authors, including user-driven commentary and "reader's choice" Web sites. Mainly Greco-Roman works (some Chinese and Persian), all in English translation.
Award-winning internet encyclopedia of mythology, folklore, and religion. Here you will find everything from A-gskw to Zveda Vechanyaya, with plenty in between. Mytholgoy section is divided into geographical regions. Also a folklore section, image galleries and genealogical tables of various pantheons.
The Shrine of the Goddess Athena
The Shrine of the Goddess Athena houses: the Museum of the Goddess Athena were can be found information about all existing objects related with the Goddess from the Archaic Period to the present; an Encyclopedia with all major information concerning the Goddess; a Dictionary with all important words used in this Shrine; an Atlas showing the locations of every places mentioned; a virtual Temple to the Goddess Athena and an Athenaeum were contemporary reflections are made about the Goddess Athena.