• Biblical Evidence for Catholicism - designed to provide an intelligent biblical, historical, and reasoned defense of the Catholic Church.
• Black Catholic Information Mall - information and resources for Black Catholics.
• Catholic Answers - Catholic apologetics organization in North America.
• Catholic Community Forum - place for Catholics and anyone interested in the church to communicate with each other.
• Catholic Encyclopedia  - documentation of all things Catholic.
• Catholic Information Center on Internet - a central directory and repository of all data on Internet that reflect the Magisterium or authoritative teaching of the Catholic Church
• Catholic Information Network (CIN) - including Pope's addresses, official Vatican documents, Mass readings, liturgical and spiritual texts, current news.
• Catholic Online - offers information and services to the Catholic community.
• Catholic PrayerBook - comprehensive library of Catholic Prayers.
• Catholic Prayers - a rich blend of Catholic prayers and images.
• Catholic Scripture Readings - weekly readings for the Mass.
• Churchforum - service for the Catholic Church in Spanish.
• Ecclesia - a web service for Catholics.
• Holy See, The - official Vatican web site.
• Korean Catholic - about the church in Korea and Korean Catholics in the US.
• Meeting Christ in the Liturgy - weekly reflections on the Sunday Gospels with references to the catechism.
• New Advent Catholic Resources - Contains hundreds of documents and links related to Catholic doctrine and apologetics.

Resources on Social Justice

• Sharing Catholic Social Teaching: Challenges and Directions 1998 Reflections of the U.S. Catholic Bishops
• Papal and Episcopal Documents relating to Catholic Social Justice Teaching Links to dozens of documents by popes, the Curia, and bishops
• The busy Christian's guide to Catholic social teaching Takes the reader through each of the major documents
• Ten Building Blocks of Catholic Social Teaching 1998 article by Father William J. Byron in America
• A Century of Catholic Social Teaching Article by Charles E. Curran in Theology Today
• Catechism of the Catholic Church, Part 3, Section 2 The social doctrine of the Church
• The Common Good and the Catholic Church's Social Teaching An excellent document from the Bishops' Conference of England and Wales
• Catholic Social Teaching and Catholic Education From the Center for Catholic Studies at the University of St. Thomas
• The Principles of the Social Doctrine of the Church By Javier Hervada, who holds a chair in Canon Law and the title of Professor of the Philosophy of Law and of Natural Law in the University of Navarre (Pamplona, Spain)
• Principles of Catholic Social Teaching A brief outline of six basic principles
• Social Doctrine The Catholic Social Justice Tradition from 1891 to 1991. Themes. Training modules. Courtesy of the Dominicans
• Rerum Novarum Article from the 1913 Catholic Encyclopedia
• Centesimus Annus: A Selective Summary This is a brief summary of Pope John Paul's recent encyclical
• The Catholic Social Tradition and the Purpose of the Corporate Enterprise Jean-Yves Calvez
• Distributivism and Catholic Social Teaching Article by John C. Médaille in The New Oxford Review, 2000
• The Catholic "Consistent Life Ethic" and Attitudes Toward Capital Punishment and Welfare Reform Article by Paul Perl in Sociology of Religion, 2001
• Christian Ethics and the Common Good A presentation by David Hollenbach, S.J.