Fallacy Files

A collection of definitions and examples that will help you see through others' arguments and improve your own.

Internet Encyclopedia of Philosophy

An independent, scholarly, peer reviewed collection of articles on key topics and philosophers in all areas of philosophy.

Markkula Center for Applied Ethics

Articles, cases, briefings, and dialogue in all fields of applied ethics, with a focus on business, health care and biotechnology, character education, government, global leadership and technology.
 

Philosophy of Religion

Brief articles addressing the question of God's existence and the implications of various positions.  Includes arguments for agnosticism, arguments for atheism and a section on Christian ethics.

Philosophy Since the Enlightenment

Articles on modern philosophy cover the Enlightenment, Romanticism, analytical philosophy, moral philosophy, existentialism and post-structuralism

Stanford Encyclopedia of Philosophy

Search or browse this collection of entries covering people, concepts and a multitude of -isms.  Entries are maintained by experts and refereed by an editorial board.