This includes online text of the original 15 volumes of history, teaching and general information from the 1917 Catholic Encyclopedia. It's excellent for historical research, but does not reflect modern thought or teaching.
All major Church documents, papal writings, the Catechism of the Catholic Church, art and even "secret" archives can be found here. The search engine is a bit cumbersome, and not all documents are available in English, but it's still the first place for all things Catholic.
Sacred Scripture, its interpretation in light of Sacred Tradition and the teachings of the magisterium, with appropriate theological commentary and exegesis.
For men and women who wish to live chaste lives in accordance with the Church's teaching on homosexuality. There is a link to Encourage, a ministry for parents and siblings of people with same-sex attraction.
According to its mission statement, SQPN (Star Quest Production Network) is a multimedia organization specializing in the production of audio and video programs faithful to the teachings of the Roman Catholic Church. The video and audio productions are in various languages to reach an international audience and cover topics ranging from Q and As about the faith to the pope and even to Catholic humor.
Disciples with Microphones features more than 50 podcasts from well-known Catholics, including Cardinal Francis Arinze, Father Stan Fortuna and Michael Barone.