Various
Eclogues, Georgics, and Aeneid
The Perseus Project hosts English as well as Latin versions of Virgil's major works. Project Gutenberg has Latin texts and English translations available for download. Click on the TXT links for an ASCII version, the ZIP links for the same text in compressed format. Plain-text English translations can also be downloaded from MIT's Internet Classics Archive.

David Wilson-Okamura
Life of Virgil
The ancient biography and introduction to the Eclogues, by Aelius Donatus. The main source for later lives, including Servius'.

David Wilson-Okamura
The Thirteenth Book of the Aeneid
The first attempt to continue Virgil's epic, by Pier Candido Decembrio.

Thomas Twyne, M.D.
Supplement to the Twelfth Book of the Aeneid
Sometimes called "the thirteenth book of the Aeneid," this continuation (1428) by Maffeo Vegio frequently accompanied the text of Virgil's epic in printed editions from 1471 to c. 1650. The Latin text of the Supplement, as printed in the editio princeps (Venice, 1471), is also available.

Joseph J. Mooney
Appendix Vergiliana
Minor works and juvenalia attributed to Virgil, including the Culex, Dirae, Lydia, Moretum, Copa, Priapeia, and Catalepton. The Latin text of the Aetna, Catalepton, Ciris, Copa, Culex, Dirae, Elegiae in Maecenatem, Lydia, and Moretum is now available at David Camden's Forum Romanum.

Joannes Opsopoeus Brettanus
Anecdota de Vergilio
"The Secret History of Virgil [1181], by Alexander Neckham, said to be based on a history by Gaius Asinius Pollio." With select bibliography on Virgil's medieval reputation as a magician. The translator's preface is useful, but occasionally inaccurate (as when it implies that only six books of the Servian commentary on the Aeneid survive).

C. John Holcolmbe
The Georgics
A literary translation of the Georgics in English hexameters, formatted for easy reading on tablets, with English and Latin on facing pages.