Links
Plato and his Dialogues (by Bernard Suzanne)
Thorough coverage of the Platonic dialogues; maps of Ancient Athens and Greece; index to persons and places; an interesting chronological table parallels Greek history with American history (i.e., Socrates trial takes place during the height of McCarthyism)
The Perseus Digital Library (Tufts University)
Lots of historical information. Full-text of historical documents; maps; bibliographies, etc.
The Last Days of Socrates (Plato's Socrates)
“For first year philosophy students”; includes a page of links under the “Research” tab; audio/video links; links to full-text documents
The Socrates Argument Clinic
Humor link: “you will have a chance to match your wits against history's most famous philosopher. Unlike some of the dialogues, a sycophantic response (or ad hominem argument) may bring on the ridicule of others. Your challenge is to complete the argument without making Socrates drink the hemlock.”
The Internet Encyclopedia of Philosophy
Links to many topics in general philosophy
Ancient Greek Sources
Aristophanes, Clouds (the plays Birds, Frogs, and Wasps also contain references to Socrates)
Aristotle, Politics
Laertius, Diogenes, The Lives of Eminent Philosophers [3rd century C.E.]
Plato, The Dialogues of Plato (2 vols.) (trans. by Benjamin Jowett)(The four dialogues that describe the trial and death of Socrates are the Euthyphro, Apology, Crito, and Phaedo)
Xenophon, Memorabilia (Apology of Socrates)
Modern Sources
Video