The Coalition for Marriage, Family and Couples Education is dedicated to making marriage education widely available. Diane Sollee is director.

Child Trends is a nonprofit, nonpartisan research center dedicated to improving children’s lives. One focus of its studies is marriage and family.

The American Association for Marriage and Family Therapy is the professional association for the field of marriage and family therapy. The organization represents the professional interests of more than 50,000 marriage and family therapists throughout the United States, Canada and abroad.

The Marriage & Religion Research Institute archives data about marriage from a number of sources. It also posts links to scholars around the country.

The Humanist Institute explores humanist values and trains future leaders. Its seminars are held primarily in New York City and Washington, D.C. Kendyl R. Gibbons and Carol Wintermute are co-deans of the institute. Contact through the website.

Camp Quest was established in 1996 as the first residential summer camp in the U.S. aimed at children from freethinking families. Amanda Metskas is executive director.

The Meming of Life blog focuses on secular parenting and includes links to secular parenting groups in many states, as well as to sites dealing with secular homeschooling and other related topics.

National Black Leadership Commission on AIDS is the oldest non-profit organization of its kind in the U.S. It works to educate and empower African American leaders to fight and help protect against HIV/AIDS in local communities through education, policy, advocacy, research and resource development.

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.