Loeb Classics Library Online - This series from Harvard University Press is now available free online. These texts
have original languages and translations of many classics.
Internet Encyclopedia of Philosophy - This excellent resource run though the Philosophy Department of University of Tennessee,
Martin, was founded and is edited by James Fieser.
Graphing a history of philosophy - The graph on this site is not a tracing of influences, but a graph based upon Wikipedia
pages. Interesting nonetheless...