The Society for the Study of Evolution promotes the study of organic evolution.

The Humanist Society certifies humanist celebrants. It’s based in Washington, D.C. Sarah Ameigh is communications and policy assistant.

PICO National Network is a network of faith-based community organizations. It was one of the leaders of the 40 Days for Health Reform campaign. Gordon Whitman is director of public policy and communications. Contact 866-550-7426 ext. 713.

Citizens for a Responsible Curriculum formed in Montgomery County, Md., out of concern for how sexual orientation was presented in the public school sex education curriculum.

The Interfaith Campus Coalition at the University of Minnesota includes clergy and students and encourages dialogue and respect among religious traditions. It posts a page on resisting pressure from religious groups, along with links to participating campus ministries and their contact information

Islamic Finder is a web tool that enables users to search for mosques by ZIP code or city.

Salatomatic allows users to search by state and city for mosques and schools in the United States and around the world. It provides descriptions of mosques and contact information.

The Interdenominational Theological Center is a consortium of six predominantly black seminaries in Atlanta.

The Cato Institute is a public policy research organization dedicated to the principles of individual liberty, limited government, free markets and peace.