The Islamic Center of Washington, D.C., was dedicated in 1957. It claims that more than 14,000 people have accepted the Islamic faith at the center since it opened. H. E. Roble Olhaye is chairman of the board of directors.

ReclaimingJudaism.org offers seminars and Web-based resources on the application of Jewish spiritual practice for spiritual seekers and teachers. Rabbi Goldie Milgram is its founder and executive director. She is the author of Reclaiming Judaism as a Spiritual Practice: Holy Days and Shabbat.

The Islamic Society of Boston began in 1981 on the campus of the Massachusetts Institute of Technology. It has since expanded to three mosques, including a new one in Roxbury. As many as 27 different nationalities are represented at Friday prayers. Contact through their website.

Reboot is a nonprofit organization that seeks to “reboot” Jewish traditions, particularly for young people, through salons across the country, journals, books and films. It is based in New York City.

Mahboubul Hassan president of the Islamic Society of Greater Manchester and professor of economics at Southern New Hampshire University. In 2007 he received the Martin Luther King Award for his leadership in the Muslim community during times of discrimination and hardship.

The National Havurah Committee is an umbrella organization for havurot, Jewish circles of fellowship, study and prayer. It helps Jews of all denominations and no denomination establish havurot in their areas. It is based in Philadelphia.

The Milken Archive of American Jewish Music takes as its mission to record and document 350 years of American Jewish music, both religious and secular. Neil Levin is the artistic director. The archive has offices in New York City and Santa Monica, Calif.

Mechon Hadar works to revitalize community, prayer and study among young Jews. Rabbi Elie Kaunfer is director.

Limmud NY works to promote Jewish learning and cultural celebration through an annual weekend of events in New York City. Sivie Twersky is its president.