Websites targeting keyword nontheism

Atheist Nexus is a social network

The Secular Web is the most comprehensive online resource about atheism, agnosticism, nontheism, secular humanism, rationalism, freethought, naturalism, materialism, skepticism, secularism, and other views of nonbelievers. It is owned and operated by Internet Infidels, Inc., a nonprofit educational organization devoted to the defense and promotion of naturalism, the hypothesis that nature is a closed system in the sense that it is not affected by anything outside of it.

The nonprofit Freedom From Religion Foundation works to educate the public on matters relating to nontheism, and to promote the constitutional principle of separation between church and state.