The Secular Web - atheist resource operated by the Internet Infidels nonprofit organization.

Skeptic's Annotated Bible / Quran / Book of Mormon - one of the best resources for critically examining 'holy' books.

About Atheism - Austin Cline's About.com page. One of the best online introductions to atheism.

The Atheist Experience - weekly television show broadcast from Austin, TX. Site features video uploads, podcasts, and more.

RichardDawkins.net - official website of the renowned evolutionary biologist and author of The God Delusion.

Daily Hitchens - archive of the works of the late Christopher Hitchens, journalist and author of god is not Great.

Sam Harris - website for the author of The End of Faith and Letter to a Christian Nation.

Freedom From Religion Foundation - an organization dedicated to preserving the separation of church and state.

Early Christian Writings - perhaps the best online resource for the scholarship on Christian texts.

LIVIUS - wonderful resource on ancient history, with a wealth of information on first century Judaea.

Atheists Helping the Homeless - website for the non-profit atheist charity located in Austin, Texas.