Stanford Encyclopedia of Philosophy
http://plato.stanford.edu/entries/confucius/
An entry in an online encyclopedia of philosophy maintained by the Metaphysics Research Laboratory at Stanford University. The site provides a detailed biography of Confucius, his social and political philosophy, as well as links to other related sources.
Internet Encyclopedia of Philosophy
http://www.iep.utm.edu/confuciu/
A peer-reviewed source of academic information, this site provides a brief overview of Confucius as he is presented in The Analects as well as a discussion of the themes in the text.
Chinese Text Project
An online compendium of various traditional ancient Chinese texts, complete with commentary and discussion boards.