About.com: Vergil and the Classical Tradition: Information on Vergil and his lasting influence on literature, with links to other Vergil essays and resources.
Bartleby.com: Vergil: Short biography of the Latin literary giant and text of the Aeneid from the 1909 Collier translation.
The Bucolics and Eclogues: Plain text file at Project Gutenberg.
The Georgics: In plain text, or as a zip file, from Project Gutenberg.
Vergil's Home Page: Links to Vergil sources of all sorts from the Classics Department of the University of Pennsylvania.
Virgil Books Online: Includes "The Bucolics and Ecloges", "The Aeneid", and "The Georgics".
Virgil's Page: Includes an excerpt from the Georgics and from the Aeneid, the latter heavily annotated.
Virgil.Org: Online search of Vergil's Latin works. Links to translations, bibliography, and books.
Virgil: Eclogues, Georgics, Aeneid: English translations, downloadable by book or as a whole, by A.S. Kline.