Foundation Beyond Belief is a humanist charity that promotes secular volunteering and responsible charitable giving. Guided by the principles of secular humanism, their mission is to:

• Unite the humanist community in volunteering and charitable efforts.
• Advocate for compassionate action throughout the world.

The United Coalition of Reason is a nonprofit national organization that helps local nontheistic groups work together to achieve higher visibility, gain more members, and have a greater impact in their local areas. We achieve this goal by assisting local groups in the "community of reason" to cooperate with each other.

The Thinking Atheist is a website, radio podcast and online community which rejects faith as a suitable tool for living. Assume Nothing. Question Everything. And Start Thinking.

Talk.origins is a Usenet newsgroup devoted to the discussion and debate of biological and physical origins.

The Society for Humanistic Judaism mobilizes people to celebrate Jewish identity and culture consistent with a humanistic philosophy of life, independent of supernatural authority.

The Skeptics Society is a scientific and educational organization of scholars, scientists, historians, magicians, professors and teachers, and anyone curious about controversial ideas, extraordinary claims, revolutionary ideas, and the promotion of science.

The Secular Student Alliance (SSA) is a 501(c)3 educational nonprofit whose purpose is to educate high school and college students around the country about the value of scientific reason and the intellectual basis of secularism in its atheistic and humanistic manifestations. We are based in Columbus, Ohio.

The mission of the Secular Coalition for America is to increase the visibility of and respect for nontheistic viewpoints in the United States, and to protect and strengthen the secular character of our government as the best guarantee of freedom for all.

Founded in 1880 on $10,000 of seed money from the American inventor Thomas Edison, Science has grown to become the world's leading outlet for scientific news, commentary, and cutting-edge research, with the largest paid circulation of any peer-reviewed general-science journal.

Scientific American, the oldest continuously published magazine in the U.S., has been bringing its readers unique insights about developments in science and technology for more than 150 years.