University of Chicago
Plutarch: The Parallel Lives: The Life of Cicero
An English translation of The Life of Cicero, by Roman biographer, Plutarch. Text is from the Loeb Classical Library, 1919 edition, and is in the public domain.
Tufts University
Perseus Digital Library: Works by and About Cicero
Contains electronic versions of many of the writings of Cicero. Some are available in both English and Latin, others only in one or the other language.
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Cicero
An extensive biography of Cicero covering his life, his philosophical writings, and his philosophical views.
Ducksters
Ducksters: Biography for Kids: Cicero
On this site, study the biography of Cicero from Ancient Rome. Learn about the greatest orator in the history of Rome.