Call To Action USA
This organization has close to twenty thousand members throughout the United States. This site contains links, news and resources for Catholic renewal. (Controversial).
http://www.cta-usa.org/

Catholic Charities USA
The largest private network of social service organizations in the United States works to support families, reduce poverty, and build communities.
http://www.catholiccharitiesusa.org/

International Order of Alhambra
A fraternal order of Catholic men dedicated to assisting persons developmentally disabled by mental retardation.
http://www.orderalhambra.org/

Brothers and Sisters of Penance
Private Catholic association of the faithful. Lay men and women living, in their own homes, modern statutes to the Primitive Rule for penitents.
http://www.bspenance.org/

Knights of St Columba
Catholic men's organisation founded in 1919 and based in the UK. Aims to assist its members, the community and the Catholic Church in its Social Teaching. Site is Java-dependent.
http://www.ksc.org.uk/

National Federation for Catholic Youth Ministry
An organization of Catholic diocesan youth ministry offices in the United States.
http://www.nfcym.org/

Shepherds of Christ Ministries
Focuses on enriching the spiritual life of priests, religious and laity through newsletters, books, tapes, and prayer networks.
http://www.sofc.org/

The Saint Joseph Foundation
Assists Catholics in knowing and vindicating their rights in the Church.
http://www.st-joseph-foundation.org/

Militia Immaculatae
Official web site of the International Center. Association founded by St. Maximilian Kolbe. Members dedicate themselves to evangelization and service. Trilingual site: Italian, English, and Spanish.
http://www.mi-international.org/

Aid to the Church in Russia
A non-profit organization established in the United States to provide material support for the Catholic Church in Russia.
http://www.aidrussia.org/

National Board for Catholic Women
Umbrella organisation serves as a consultative body to the Bishops Conference of England and Wales. Overview of their work in the UK, publications, list of member organisations.
http://www.nbcw.org/

Association for the Rights of Catholics in the Church
A source for documents and links on current issues and reform/renewal movements within the Church.
http://astro.temple.edu/~arcc/

Opus Sanctorum Angelorum
Promotes "a true imitation of the holy angels, and a conscious collaboration with them." Worship, contemplation, active apostolate. Prays for priests and bishops.
http://www.opusangelorum.org/

Catholic Marketing Network
Association of retailers and suppliers of Catholic literature, music, gifts, and other products and services consistent with the teachings of the Catholic Church.
http://catholicmarketing.com/

Catholic Network for Women's Equality
A Canadian feminist-focused support and advocacy group for women and men in the Roman Catholic tradition. Goals, activities, selected articles from newsletter, contact information.
http://www.cnwe.org/

Central Association of the Miraculous Medal
Fosters devotion to Mary the Mother of God to support apostolic works on behalf of the poor.
http://www.cammonline.org/

Association of Hebrew Catholics
Working to preserve the identity and heritage of Jews who have entered the Catholic Church. Proposes the establishment of an Israelite Community (not a new rite) within the Church.
http://hebrewcatholic.org/

National Black Catholic Congress
Umbrella organization representing African American Catholics. Mission statement, structure, history, FAQ, online monthly newsletter, master calendar.
http://www.nbccongress.org/

Corpus Canada
An association for renewed Catholic priesthood. Laicized Catholic priests, their spouses, and friends. Promotes Catholic Church reform.
http://www.corpuscanada.org/

Saint Michael's Call
Experts' Forum, prayers, library, outreach, email lists, links.
http://www.saint-mike.org/

Advent
Support group in the UK for priests and religious who have left the official ministry or religious life. Description, aims, mailing list. Uses frames.
http://adventgroup.org.uk

The Lepanto League
Homesite of a group of traditional Catholics trying to preserve the faith. Includes link to monthly newsletter.
http://www.lepanto.org.au

Mary's Pence
Catholic organization that provides an opportunity for men and women to direct a church (defined as People of God) donation to women's ministries.
http://www.maryspence.org/