Pope St. Pius X wrote this simple catechism for use by the faithful. It was used in Italy, but was not given the wider circulation the Holy Father had hoped for. It explains in a simple style the truths of the Faith.
Searchable version of 1992 Catechism with 1997 updates. Search engine results point to only individual sections, not allowing access to larger portions of the Catechism.
This searchable online version includes the corrections promulgated by Pope John Paul II on 8 September 1997. Also two ways to view the table of contents. Search returns links to a list of paragraphs; from the paragraph you can easily jump to the section in which it appears.
1992 version. A few paragraphs and some footnotes are missing. Has concordances and word frequency lists. Each article or equivalent section in its own file.