Main Sites
- Christusrex
- New Advent
- Catholic Kiosk
- Catholic Goldmine
- Iglesia International Site in Spanish
- Churchforum Another beautiful Spanish-speaking Site
- Una Voce Another traditional Catholic Site
- Traditio Another traditional Catholic Site
- Totus tuus A Catholic site in Italian
Art
- St. Egidius' in Bardejov
- Wood Churches in Eastern Slovakia/Drevené Kostoly Východného Slovenska
- Kirchen in Köln Churches in Cologne
- Mostra del Tesoro del Duomo di Vercelli
- Orthodox Byzantine Icons
Bible
- Vulgata Bible: a recommended book!
- Biblia Sacra Vulgatae Editionis Anno 1861, C. Vercellone Editore
- Biblia Sacra Vulgatae Editionis Anno 1914, P. Michael Hetzenauer Editore
- Nova Vulgata
Books
- St. Thomas Aquinas: Summa Theologica
- St. Teresa of Jesus: The Life
- St. John Damascene: De Fide Orthodoxa
- Eucherius of Lyons: De Contemptu Mundi
- Catholic Encyclopedia
- Enciclopedia Católica In Spanish
- Bernard Gui Inquisitors' Manual
- Classical Catholic Books Index
- A History of the Warfare of Science with Theology in Christendom by A. Dickson White
- Katolícke Noviny Slovakian Catholic magazine
Ecumenism
- Office for the Victim of Abortion an Orthodox prayer
- Orthodox Russian Liturgy
- Православный библиотекарь Orthodox Library
- Русско-английско-французский словарь (глоссарий) религиозной лексики Russian/English/French Orthodox religious dictionary
Forum
- Cattolici Romani A wide Italian forum
History of the Church
Liturgy & Prayers
- Roman Rite A site about Roman Liturgy
- Pro Missa Tridentina A German site
- Liturgia Latina With sources published
- Thesaurus Precum Latinarum A huge index of Latin prayers
- CURSUS: An Online Resource of Medieval Liturgical Texts
- Maranatha An Italian liturgical site
- Catholic Prayerbook A big source for English prayers
- Holy Rosary in Latin A very powerful prayer!
- Liturgia hodín In Slovakian
- The Global Registry of Traditional Latin Masses Approved By Legitimate Authority
- Treasury of Novenas
- Protesta per la buona morte
- Litanies de la Bonne Mort
- католичество
- Божанствена литургија светог оца нашега Јована Златоуста
- Akathist Hymn
Official Documents
- Code of Canon Law
- Papal Encyclicals
- Syllabus of Bl. Pius IX
- Lamentabili Sane A St. Pius X's Encyclical (in English)
- Lamentabili Sane A St. Pius X's Encyclical (in Italian)
- Quo Primum by St. Pius V
- Ecclesia Dei by John Paul II On the Traditionalists
- Catechism of St. Pius X
- Catechism of Trent
Religious Orders and Similar
- Societas Jesu
- U.S. Jesuit Resources on WWW
- Ordo Praedicatorum
- Barnabite Fathers
- Ordo Sancti Benedicti
- Ordo Fratrum Beatissimae Virginis Mariae de Monte Carmelo (The Carmelites)
- Opus Dei
- Istituto di Cristo Re Sommo Sacerdote
- Ordo Sancti Augustini Augustinians
Saints
- Saints Index
- Patron Saints Index
- Saints Alive! Saints and their relics
- Saints at Saint Joseph Forum
- Santi e Beati
- Das Ökumenische Heiligenlexikon Another huge Saints index in German
- Franciscan Saints
- Saint Fidelis from Sigmaringen
- St. John Chrisostom
- Blessed Metod Dominik Trčka, C.Ss.R. A Slovak Martyr in the Communistic Age
- Blessed Eugene Bossilkov A Bulgarian martyr
- Vita dei santi Some saints' lives (in English and Italian)
Shrines
Vatican & Dioceses
- The Holy See
- Catholic Hierarchy Current and historical information about Bishops and Dioceses
- Cardinals of the Holy Roman Church Biographies and catalogues
- Chiesa Cattolica Italiana
- Katolícky Cirkev na Slovensku
- Gréckokatolícky Cirkev na Slovensku
- The Syro-malabaran Church
- Archdiocese Adelaide
- Erzbistum Köln
- Iglesia católica en Chile
- Diocesis de Osorno, Chile
- Ukrainian Greek Catholic Church
- Ukrainian Catholic Church in Australia
- Atlante della Chiesa Atlas of the Church