Divine Office on-line: http://divinumofficium.com/
In the Roman Catholic Church priests are required by canon law to pray the entire Liturgy of the Hours each day while deacons are required to pray the morning and evening hours. The practice among religious communities varies according to their rules and constitutions. The Second Vatican Council also exhorted the Christian laity to take up the practice, and as a result, many lay people have begun reciting portions of the Liturgy of the Hours. This site offers many versions of the Traditional Office going back to pre-Tridentine monastic. It is interesting and inspiring to see how little it has changed over the centuries. This site is formatted for access to the traditional office on personal computers or smartphones.