Roman

Apollinaris Sidonius - Contents include Latin texts of the Epistulae, as well as related links. Site accompanies a doctoral thesis which will provide a commentary on book 7.
http://home.hccnet.nl/j.a.van.waarden/

Texts in Perseus for Browsing: Latin - Primary Text Index: Latin Texts
http://www.perseus.tufts.edu/Texts/latin_TOC.html

Tibullus and Sulpicia : The Poems - A 2001 A.S. Kline English translation of the poems of Albius Tibullus, and those of and about Sulpicia, from the Messalla Collection. Provides index of first lines.
http://www.tonykline.co.uk/index.html

Forum Romanum - Listing of online texts from Augustine to Vergil. Also, grammar, history, mythology, help for students of the Latin language.
http://www.forumromanum.org/

Lacus Curtius - Extensive ancient Rome resource. Includes numerous photographs of Roman monuments, several classical texts, secondary sources in the public domain, and catalogues of parts of the Roman Empire.
http://penelope.uchicago.edu/Thayer/E/

Latin Language at About.com - Links to literature and learning links.
http://ancienthistory.about.com/cs/latin/

De Re Militari by Flavius Vegetius Renatus - Preface to the 390 AD work on the military institutions of Rome; translation by Lt. John Clarke (1767). Etext by Mads Brevik, divided by book.
http://www.pvv.ntnu.no/~madsb/home/war/vegetius/

Flavius Vegetius Renatus: Military Matters - Sonshi.com hypertext of the Clarke translation, divided by chapter;
http://www.sonshi.com/vegetius.html

Cassiodorus - Page on Cassiodorus, the 5th Century BC monk and statesman, by James J. O'Donnell. This links to the author's e-text biography of him, which is sorted by chapter and includes the author's preface, appendices, and notes.
http://www.georgetown.edu/faculty/jod/cassiodorus.html