General Philosophy The Internet Encyclopedia of Philosophy The Stanford Encyclopedia of Philosophy
Guide to Philosophy on the Internet
History of Western Philosophy
Ethics The Internet Encylopedia of Ethics
"Ethics Updates" from The University of San Diego
History of Animal Rights
The Moral Status of Animals
Critical Thinking Skeptical Inquirer (The C.S.I.C.O.P.)
Carl Sagan's "Baloney Detection Kit"
The James Randi Educational Foundation
Urban Legends Reference Pages ("Snopes")
Feminism & Philosophy
Feminism & Philosophy Site
Logic
An extensive list of logical fallacies
The basics of symbolic/formal logic
A free online logic text
World Religions
Historical Texts in World Religions
Philosophy of Religion
Arguments for and against the existence of God
Organizations
The American Philosophical Association
The American Academy of Religion
Religious Tolerance